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https://github.com/hendricius/the-sourdough-framework
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Improve typography (#120)
* Add unbreakable space before a reference or a citation avoids ref to be put on next line or page... * Add unbreakable space between I and verb * Remove spacing before footnotes Also moved it before the final sentence dots in many cases... might need a review of what is best. But this is a safe default choice from an esthetic point of view. * Improve footnotes and punctuations Reverse order/kerning especially with sans-serif version. * Remove manual enumerate * Fix wording in a citation. Reads better that way and is shorter. * Use emph instead of italics 1) Markup semantic not style 2) Will deal with various level of empahasis 3) Was a mix of \it and \textit * Fix usage of quotes Also replaced some of then by \emph as it is (IMHO) more visually pleasant. * Captitalize before reference * Correct dashes length see here: https://www.merriam-webster.com/words-at-play/em-dash-en-dash-how-to-use * Remove space before label and homogenize caption Apparently it can create a wrong reference, if notthing else shuts texcheck up and cost nothing... so let's do it. While at it adding a dot at the end of each caption. * Add missing empty line before signature in preface * Add a static checker target to makefile Shall help prevent adding mistakes in new versions
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@@ -1,4 +1,4 @@
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\section{Debugging your crumb structure}
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\section{Debugging your crumb structure}%
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\label{section:debugging-crumb-structure}
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The crumb structure of your bread provides insights into how well
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@@ -10,7 +10,7 @@ that you can use to debug your baking process.
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\includegraphics[width=\textwidth]{crumb-structures-book}
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\caption{A schematic visualization of different crumb structures and their respective causes. The
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final bread's crumb is a key aspect to identify potential issues related to fermentation
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or baking technique.}
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or baking technique.}%
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\label{fig:crumb-structures-book}
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\end{figure}
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@@ -19,7 +19,7 @@ that you can use to debug your baking process.
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\begin{figure}
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\includegraphics[width=\textwidth]{open-crumb}
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\caption{The bread has a somewhat open crumb with areas
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featuring a honeycomb structure.}
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featuring a honeycomb structure.}%
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\label{fig:open-crumb}
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\end{figure}
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@@ -34,8 +34,8 @@ however, to achieve it you need to ferment your bread dough perfectly.
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It takes a lot of skill both in terms of mastering fermentation and technique
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to achieve a crumb structure like that.
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Personally, I like a bread like that, just with a slightly less wild crumb.
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The style of crumb I like is called the {\it honeycomb crumb}. It's not too open, but
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Personally, I~like a bread like that, just with a slightly less wild crumb.
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The style of crumb I~like is called the \emph{honeycomb crumb}. It's not too open, but
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just enough open to make the bread very fluffy. To achieve the previously mentioned open crumb, you
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have to touch your dough as little as possible. The more you interact with your
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dough, the more you are degassing your dough. Excess touching of the dough
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@@ -44,12 +44,13 @@ That's why achieving such a crumb works best if you only ferment
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one loaf at a time. Normally, if you have to pre-shape your dough,
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you will automatically degas your dough a little bit during the rounding process.
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If you skip this step and directly shape your dough, you will achieve a more open crumb.
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A good rule of thumb is to not touch your dough for at least 1-2 hours before shaping,
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A good rule of thumb is to not touch your dough for at least 1--2 hours before shaping,
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to achieve as open a crumb as possible.
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\begin{figure}
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\includegraphics[width=\textwidth]{honeycomb}
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\caption{A whole wheat sourdough with an almost exclusive honeycomb crumb structure.}
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\caption{A whole wheat sourdough with an almost exclusive honeycomb crumb
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structure.}%
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\label{fig:honeycomb}
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\end{figure}
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@@ -69,34 +70,34 @@ there is not enough gas to inflate the structures. To me this is the perfect
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style of crumb. As someone who appreciates jam, no jam will fall through a slice
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of this bread compared to an open crumb.
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\subsection{Overfermented}
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\subsection{Overfermented}%
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\label{sec:overfermented-dough}
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\begin{figure}
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\includegraphics[width=\textwidth]{fermented-too-long}
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\caption{A relatively flat dough that has many tiny pockets of air.}
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\caption{A relatively flat dough that has many tiny pockets of air.}%
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\label{fig:fermented-too-long}
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\end{figure}
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When fermenting your dough for too long, the protease enzyme starts to
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break down the gluten of your flour. Furthermore, the bacteria consume the gluten
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in a process called {\it proteolysis} \cite{raffaella+di+cagno}.
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Bakers also refer to this process as {\it gluten rot}.
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in a process called \emph{proteolysis}~\cite{raffaella+di+cagno}.
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Bakers also refer to this process as \emph{gluten rot}.
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The gluten that normally traps the \ch{CO2} created
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by the fermentation process of your microorganisms can no longer keep the
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gas inside of the dough. The gas disperses outward resulting in smaller alveoli in your crumb.
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The bread itself tends to be very flat in the oven. Bakers often refer
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to this style of bread as a {\it pancake}. The oven spring can be compared
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to this style of bread as a \emph{pancake}. The oven spring can be compared
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to bread doughs made out of low-gluten flour like einkorn.
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Your bread will feature a lot of acidity, a really strong distinctive tang. From
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a taste perspective, it might be a little bit too sour. From my own tests with family and
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friends (n=15-20), I can say that this style of bread is typically
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appreciated less. However, I personally really like the hearty strong taste.
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friends (n=15--20), I~can say that this style of bread is typically
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appreciated less. However, I~personally really like the hearty strong taste.
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It is excellent in combination with something
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sweet or a soup. From a consistency perspective, it is no longer as fluffy as it could be.
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The crumb might also taste a little bit gummy. That's because it has been broken down a lot
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by the bacteria. Furthermore, this style of bread has a significantly lower amount of gluten \cite{raffaella+di+cagno}
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by the bacteria. Furthermore, this style of bread has a significantly lower amount of gluten~\cite{raffaella+di+cagno}
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and is no longer comparable to raw flour, it's a fully fermented product.
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You can compare it with a blue cheese that is almost lactose free.
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@@ -104,10 +105,10 @@ When trying to work with the dough, you will notice that suddenly the dough feel
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very sticky. You can no longer properly shape and work the dough. When trying to
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remove the dough from a banneton, the dough flattens out a lot. Furthermore,
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in many cases your dough might stick to the banneton. When beginning with baking
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I would use a lot of rice flour in my banneton to dry out the surface of the dough a lot.
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I~would use a lot of rice flour in my banneton to dry out the surface of the dough a lot.
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This way the dough wouldn't stick, despite being overfermented. However as it
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turns out the stickiness issue has been my lack of understanding the fermentation
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process. Now I never use rice flour, except when trying to apply decorative scorings.
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process. Now I~never use rice flour, except when trying to apply decorative scorings.
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Properly managing fermentation results in a dough that is not sticky.
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If you are noticing, during a stretch and fold or during shaping, that your dough
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@@ -121,11 +122,11 @@ you can simply pour some of your dough directly into a heated pan with a bit of
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oil. It will make delicious sourdough flatbreads.
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To fix issues related to over-fermentation, you need to stop the fermentation process
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earlier. What I like to do is to extract a small fermentation sample from my dough.
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Depending on the volume increase of this sample, I can mostly judge when my fermentation
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earlier. What I~like to do is to extract a small fermentation sample from my dough.
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Depending on the volume increase of this sample, I~can mostly judge when my fermentation
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is finished. Try to start with a 25 percent volume increase of your main dough or sample.
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Depending on how much gluten your flour has, you can ferment for a longer period of time.
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With a strong flour featuring a 14-15 percent protein, you should be able to safely
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With a strong flour featuring a 14--15 percent protein, you should be able to safely
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ferment until a 100 percent size increase. This however also depends on your
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sourdough starter's composition of yeast and bacteria. The more bacterial fermentation,
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the faster your dough structure breaks down. Frequent feedings of your sourdough
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@@ -141,11 +142,12 @@ flavor profile, then a stronger flour with more gluten will help.
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\begin{figure}
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\includegraphics[width=\textwidth]{fermented-too-short-underbaked}
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\caption{A dense dough featuring a gummy, not fully gelatinized area.
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The picture has been provided by the user wahlfeld from our community Discord server.}
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The picture has been provided by the user wahlfeld from our community
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Discord server.}%
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\label{fig:fermented-too-short-underbaked}
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\end{figure}
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This defect is also commonly referred to as {\it underproofed}. However underproofed
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This defect is also commonly referred to as \emph{underproofed}. However underproofed
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is not a good term as it only refers to having a short final
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proofing stage of the bread-making process.
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If you were to bake your bread after a perfectly-timed bulk fermentation stage,
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@@ -167,7 +169,7 @@ as the interior heats up faster compared to the rest of the dough. Once all the
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has gelatinized, the alveoli holds their shape and no longer expand. During this
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process other parts of the bread dough are pushed outwards. That's why an underfermented
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dough sometimes even features an ear during the baking process. This
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is also commonly referred to as a {\it fool's crumb}. You are excited about an ear which
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is also commonly referred to as a \emph{fool's crumb}. You are excited about an ear which
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can be quite hard to achieve. Plus you might think you finally created some big pockets
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of air in your crumb. But in reality you fermented for too short a period
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of time.
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@@ -176,7 +178,7 @@ of time.
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\includegraphics[width=\textwidth]{fools-crumb}
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\caption{A typical example of a fool's crumb featuring an ear and several overly
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large alveoli. The picture has been provided by Rochelle from our
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community Discord server.}
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community Discord server.}%
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\label{fools-crumb}
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\end{figure}
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@@ -192,7 +194,7 @@ To fix issues related to under-fermentation, you simply have to ferment your dou
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for a longer period of time. Now, there is an upper limit to fermentation time
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as your flour starts to break down the moment it is in contact with water. That's why it
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might be a good idea to simply speed up your fermentation process. As a rough
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figure, I try to aim for a bulk fermentation time of around 8-12 hours typically.
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figure, I~try to aim for a bulk fermentation time of around 8--12 hours typically.
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To achieve that you can try to make your sourdough starter more active. This can be done
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by feeding your starter daily over several days. Use the same ratio as you would
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do for your main bread dough. Assuming you use 20 percent starter calculated on the flour,
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@@ -208,7 +210,7 @@ and less bacterial activity.
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\begin{figure}
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\includegraphics[width=\textwidth]{flat-bread}
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\caption{A very flat bread without enough dough strength.}
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\caption{A very flat bread without enough dough strength.}%
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\label{flat-bread}
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\end{figure}
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@@ -219,7 +221,7 @@ mostly rather than springing upwards in the oven. This can also happen if you
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proofed your dough for too long. Over time the gluten relaxes and your dough
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becomes more and more extensible. You can observe the gluten relaxing behavior
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too when making a pizza pie. Directly after shaping your dough balls, it's very hard to shape
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the pizza pie. If you wait for 30-90 minutes stretching the dough becomes a lot easier.
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the pizza pie. If you wait for 30--90 minutes stretching the dough becomes a lot easier.
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The easiest way to fix this is probably to knead your dough more at the start. To simplify
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things consider using less water for your flour too. This will result in a more elastic dough
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@@ -232,7 +234,7 @@ The last option to fix a dough with too little dough strength is to shape your d
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\begin{figure}
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\includegraphics[width=\textwidth]{baked-too-hot-v2}
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\caption{A bread with very large alveoli close to the crust}
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\caption{A bread with very large alveoli close to the crust.}%
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\label{baked-too-hot}
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\end{figure}
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@@ -253,7 +255,7 @@ essential for the dough to hold its structure. After conducting several
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experiments, it seems that my sweet spot for maximum oven spring seems to be
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at around 230°C (446°F). Test the temperature of your oven, because in several
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cases the displayed temperature might not match the actual temperature of your
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oven \cite{too+hot+baking}. Make sure to turn off the fan of your oven. Most
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oven~\cite{too+hot+baking}. Make sure to turn off the fan of your oven. Most
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home ovens are designed to vent the steam as fast as possible. If you can not
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turn the fan off, consider using a Dutch oven.
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@@ -261,14 +263,14 @@ turn the fan off, consider using a Dutch oven.
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\begin{figure}[h]
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\includegraphics[width=\textwidth]{no-steam}
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\caption{One of my earlier breads that I baked at a friend's place where
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I couldn't steam the dough properly}
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\caption{One of my earlier breads that I~baked at a friend's place where
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I~couldn't steam the dough properly.}%
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\label{no-steam}
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\end{figure}
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Similar to baking too hot, when baking without enough steam, your dough's crust
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forms too quickly. It's hard to spot the difference between the two mistakes.
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I typically first ask about the temperature and then about the steaming technique
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I~typically first ask about the temperature and then about the steaming technique
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to determine what might be wrong with the baking process. Too little steam can
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typically be spotted by having a thick crust around all around your dough paired
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with large alveoli towards the edges.
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@@ -286,38 +288,38 @@ of the oven.
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\includegraphics[width=\textwidth]{apple-experiment-temperatures}
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\caption{An apple with 2 probes to measure ambient
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and surface temperatures of several steaming techniques
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in a Dutch oven.}
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in a Dutch oven.}%
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\label{apple-experiment-temperatures}
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\end{figure}
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Now there can also be too much steam. For this I tested using a Dutch oven paired with large ice
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Now there can also be too much steam. For this I~tested using a Dutch oven paired with large ice
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cubes to provide additional steam. The temperature of my dough's surface would directly
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jump close to 100°C. The steam contains more energy and thus through convection
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can heat up the surface of your dough faster. I tested this by putting an apple inside
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can heat up the surface of your dough faster. I~tested this by putting an apple inside
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a Dutch oven and measuring its surface temperature using a barbecue thermometer.
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I then changed the steaming methods to plot how quickly the temperature
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close to the surface changes. I tested an ice cube inside of a preheated
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I~then changed the steaming methods to plot how quickly the temperature
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close to the surface changes. I~tested an ice cube inside of a preheated
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Dutch oven, a preheated Dutch oven, a preheated Dutch oven with spritzes
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of water on the apple's surface, a non-preheated Dutch oven where I would only preheat
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of water on the apple's surface, a non-preheated Dutch oven where I~would only preheat
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the bottom part. The experiment then showed that the ice-cube method would heat up
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the surface of the apple a lot quicker. When replicating this with a bread dough,
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I would achieve less oven spring.
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I~would achieve less oven spring.
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\begin{figure}[h]
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\includegraphics[width=\textwidth]{apple-experiment-surface-temperatures}
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\caption{A chart showing how the temperature of the surface
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of the apple changes with different steaming techniques.}
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of the apple changes with different steaming techniques.}%
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\label{apple-experiment-surface-temperatures}
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\end{figure}
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\begin{figure}[h]
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\includegraphics[width=\textwidth]{apple-experiment-ambient-temperatures}
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\caption{This figure shows how the ambient temperatures inside of the
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Dutch oven change depending on the steaming technique that is used.}
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Dutch oven change depending on the steaming technique that is used.}%
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\label{apple-experiment-ambient-temperatures}
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\end{figure}
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Generally though, achieving too much steam is relatively challenging. I could only
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Generally though, achieving too much steam is relatively challenging. I~could only
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make this mistake when using a Dutch oven as the steaming method paired with relatively
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large ice cubes. After talking with other bakers using the same Dutch oven, it seems
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that my ice cubes (around 80g) were 4 times as heavy as the ones other bakers
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@@ -10,13 +10,13 @@ amylase and protease enzymes work faster, making more
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sugars available and degrading the gluten proteins.
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At around 22°C (72°F) in my kitchen my bulk fermentation is ready
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after around 10 hours. I use around 20 percent of sourdough
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after around 10 hours. I~use around 20 percent of sourdough
|
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starter based on the flour. In summertime the temperatures
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in my kitchen sometimes increase to 25°C (77°F). In that case
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I reduce the sourdough starter to around 10 percent.
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I~reduce the sourdough starter to around 10 percent.
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If I didn't do that, my fermentation would be done after
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around 4-7 hours. The problem is that the dough is quite
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If I~didn't do that, my fermentation would be done after
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around 4--7 hours. The problem is that the dough is quite
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unstable when fermenting at this high speed. This means
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that you easily run into issues of over-fermentation.
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Finding the perfect sweet spot between fermenting enough
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@@ -24,22 +24,22 @@ and not too much becomes much harder. Normally you might
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have a time window of 1 hour. But at the rapid speed it
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might be reduced to a time window of 20 minutes. Now at
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30°C (86°F), everything moves much faster. Your bulk
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fermentation might be complete in 2-4 hours when using
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10-20 percent starter. Proofing your dough in the fridge
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fermentation might be complete in 2--4 hours when using
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10--20 percent starter. Proofing your dough in the fridge
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becomes almost impossible. As your dough cools down in the
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fridge the fermentation also slows down. However cooling the
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dough down from 30°C to 4-6°C in your fridge takes much
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dough down from 30°C to 4--6°C in your fridge takes much
|
||||
longer. Your dough is much more active compared to a dough
|
||||
that starts at a temperature of 20-25°C. You might
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||||
that starts at a temperature of 20--25°C. You might
|
||||
end up overproofing your dough if you leave it overnight
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||||
in the fridge.
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|
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That's why I recommend that you reduce the amount of starter
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||||
that you use in the tropics to around 1-5 percent
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That's why I~recommend that you reduce the amount of starter
|
||||
that you use in the tropics to around 1--5 percent
|
||||
based on the flour. This will slow down the fermentation
|
||||
process significantly and provides you a bigger window
|
||||
of time. Try to aim for an overall bulk fermentation of at
|
||||
least 8-10 hours. Reduce the amount of starter to get there.
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||||
least 8--10 hours. Reduce the amount of starter to get there.
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|
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When making dough, try to use the same water temperature
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||||
as your ambient temperature. Assuming that the temperature
|
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@@ -47,7 +47,7 @@ will climb to 30°C, try to start your dough
|
||||
with 30°C water. This means that you can carefully rely on
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||||
a small fermentation sample (aliquot jar) that visualizes your fermentation
|
||||
progress. To read more about this technique refer
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||||
to section \ref{section:bulk-fermentation}.
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||||
to Section~\ref{section:bulk-fermentation}.
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||||
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||||
The sample only works reliably if your dough temperature
|
||||
is equal to your ambient temperature. Else the sample heats
|
||||
@@ -61,7 +61,7 @@ could be a pH meter that allows you to perfectly
|
||||
measure how much acidity has been created by the
|
||||
lactic and acetic acid bacteria. In this case measure
|
||||
the pH repeatedly and figure out a value that works
|
||||
for your sourdough. In my case I tend to end bulk
|
||||
for your sourdough. In my case I~tend to end bulk
|
||||
fermentation at a pH of around 4.1. Please don't just
|
||||
follow my pH value; it's very individual. Keep measuring
|
||||
with different doughs to find out a value that works for you.
|
||||
@@ -75,9 +75,9 @@ from a taste and consistency perspective, it might be
|
||||
that your bread tastes too sour, or is not fluffy anymore.
|
||||
Please also note that you can only make bread with
|
||||
great oven spring when making wheat based doughs. When
|
||||
starting with this hobby I always wondered why my rye
|
||||
starting with this hobby I~always wondered why my rye
|
||||
breads would turn out so flat. Yes, rye has gluten, but
|
||||
small particles called {\it hemicelluloses} (arabinoxylan and beta-glucan) \cite{rye-defects}.
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||||
small particles called \emph{hemicelluloses} (arabinoxylan and beta-glucan)~\cite{rye-defects}.
|
||||
prevent the dough from developing a gluten network it can
|
||||
with wheat. Your efforts will be in vain, and your dough will
|
||||
stay flat. Only spelt- and wheat-based doughs have the capability
|
||||
@@ -98,10 +98,10 @@ starter. The stiff sourdough starter boosts
|
||||
the yeast part of your starter. This allows you
|
||||
to have less bacterial fermentation, resulting
|
||||
in a stronger gluten network toward the end
|
||||
of the fermentation \cite{stiff+starter}. Please
|
||||
also refer to the section ~\ref{sec:overfermented-dough} where
|
||||
I explained more about overfermented doughs. You can also
|
||||
refer to section ~\ref{section:stiff-starter} with more details on
|
||||
of the fermentation~\cite{stiff+starter}. Please
|
||||
also refer to the Section~\ref{sec:overfermented-dough} where
|
||||
I~explained more about overfermented doughs. You can also
|
||||
refer to Section~\ref{section:stiff-starter} with more details on
|
||||
making a stiff sourdough starter.
|
||||
|
||||
Furthermore, a stronger flour containing more gluten
|
||||
@@ -118,7 +118,7 @@ suddenly become very sticky after a few hours? That's a
|
||||
another good indicator. Please also use your nose to note
|
||||
the smell of the dough. It shouldn't be too pungent.
|
||||
|
||||
\section{I want more tang in my bread}
|
||||
\section{I~want more tang in my bread}
|
||||
|
||||
To achieve more tang in your sourdough bread, you have
|
||||
to ferment your dough for a longer period of time.
|
||||
@@ -130,10 +130,10 @@ not perceived as sour. In most cases a longer fermentation
|
||||
is what you want. You will either need to utilize a loaf
|
||||
pan to make your dough or use a flour that can withstand
|
||||
a long fermentation period. A flour like this is typically
|
||||
called a {\it strong flour}. Stronger flours tend
|
||||
called a \emph{strong flour}. Stronger flours tend
|
||||
to be from wheat varieties that have be grown in more
|
||||
sunny conditions. Because of that, stronger flours tend
|
||||
to be more expensive. For freestanding loaves, I recommend
|
||||
to be more expensive. For freestanding loaves, I~recommend
|
||||
using a flour that contains at least 12 percent protein.
|
||||
Generally, the more protein, the longer you can ferment your dough.
|
||||
|
||||
@@ -151,16 +151,16 @@ time the acetic acid-producing bacteria will perish from your starter.
|
||||
|
||||
\begin{figure}[!htb]
|
||||
\includegraphics[width=\textwidth]{parbaked-bread.jpg}
|
||||
\caption{A half-baked bread, known as "parbaked".}
|
||||
\caption{A half-baked bread, known as \emph{parbaked}.}%
|
||||
\label{fig:parbaked-bread}
|
||||
\end{figure}
|
||||
|
||||
Another easier option could be to bake your sourdough
|
||||
twice. I have observed this when shipping bread for my micro
|
||||
twice. I~have observed this when shipping bread for my micro
|
||||
bakery. The idea was to bake my bread for around 30 minutes
|
||||
until it's sterilized, let it cool down and then ship it
|
||||
to customers. Once you receive it, you just bake it again
|
||||
for another 20-30 minutes to achieve the desired crust and
|
||||
for another 20--30 minutes to achieve the desired crust and
|
||||
then you can eat it. Some of the customers reported a very sour
|
||||
tasting bread. After investigating a bit more, it became
|
||||
crystal clear. By baking the bread twice you don't boil off
|
||||
@@ -184,10 +184,10 @@ will be good for a longer period of time. That's why
|
||||
the concept of a delivery bakery works well with tangy sourdough bread.
|
||||
In my own experiments, the bread stayed good for up to a week
|
||||
in a plastic bag. This is much longer than a yeast-based dough that might
|
||||
mold after just a few days. \footnote{Some of my first test customers however
|
||||
mold after just a few days\footnote{Some of my first test customers however
|
||||
reported that the bread was overly sour and not pleasant to eat at all.
|
||||
When this happens to you, consider toasting the bread. Toasting
|
||||
will boil off additional acidity.}
|
||||
will boil off additional acidity.}.
|
||||
|
||||
\section{My bread is too sour}
|
||||
|
||||
@@ -206,25 +206,26 @@ more yeast and less bacteria. This way, for the same given
|
||||
volume increase of your dough, you will have less acidity.
|
||||
A really good trick is to make sure that you feed your starter
|
||||
once per day at room temperature. This way you shift
|
||||
the tides of your starter towards a better yeast fermentation \cite*{more+active+starter}.
|
||||
the tides of your starter towards a better yeast fermentation~\cite*{more+active+starter}.
|
||||
|
||||
To shift the tides even further, a real game changer
|
||||
for me has been to create a stiff sourdough starter. The
|
||||
stiff sourdough starter is at a hydration of around 50 percent.
|
||||
By doing so your sourdough starter will favor yeast
|
||||
activity a lot more. Your doughs will be more fluffy and less
|
||||
sour for a given volume increase. I tested this
|
||||
by putting balloons over different glass jars. I used
|
||||
sour for a given volume increase. I~tested this
|
||||
by putting balloons over different glass jars. I~used
|
||||
the same amount of flour for each of the samples.
|
||||
I tested a regular starter, a liquid starter and a stiff
|
||||
I~tested a regular starter, a liquid starter and a stiff
|
||||
starter. The stiff starter by far created the most \ch{CO2}
|
||||
compared to the other starters. As a consequence, the stiff
|
||||
starter balloon was inflated the most. \cite{stiff+starter} You can read more
|
||||
about the topic of stiff starters in section \ref{section:stiff-starter}.
|
||||
starter balloon was inflated the most~\cite{stiff+starter}. You can read more
|
||||
about the topic of stiff starters in Section~\ref{section:stiff-starter}.
|
||||
|
||||
Another unconventional approach could be to add baking
|
||||
powder to your dough. The baking powder neutralizes the
|
||||
lactic acid and will make a much milder dough.\cite{baking+powder+reduce-acidity}
|
||||
lactic acid and will make a much milder
|
||||
dough~\cite{baking+powder+reduce-acidity}.
|
||||
|
||||
\section{Fixing a moldy sourdough starter}
|
||||
|
||||
@@ -234,11 +235,11 @@ Normally the symbiosis of yeast and bacteria does not allow external
|
||||
pathogens such as mold to enter your sourdough starter.
|
||||
The low pH created by the bacteria is a very hostile environment
|
||||
that no other pathogens like. Generally everything below a pH
|
||||
of 4.2 can be considered food safe\cite{food+safe+ph}. This
|
||||
of 4.2 can be considered food safe~\cite{food+safe+ph}. This
|
||||
is the concept of pickled foods. And your sourdough bread
|
||||
is essentially pickled bread.
|
||||
|
||||
I have seen this happening especially when the sourdough
|
||||
I~have seen this happening especially when the sourdough
|
||||
starter is relatively young. Each flour naturally contains
|
||||
mold spores. When beginning a sourdough starter, all
|
||||
the microorganisms start to compete by metabolizing the
|
||||
@@ -249,13 +250,13 @@ again, it might be a very moldy batch of flour. Try a different
|
||||
flour to begin your sourdough starter with.
|
||||
|
||||
Mature sourdough starters should not go moldy unless the conditions
|
||||
of the starter change. I have seen mold appearing when the starter is stored
|
||||
of the starter change. I~have seen mold appearing when the starter is stored
|
||||
in the fridge and the surface dried out. It also sometimes forms on the
|
||||
edges of your starter's container, typically in areas where no active
|
||||
starter microorganisms can reach. Simply try to extract an
|
||||
area of your starter that has no mold. Feed it again with flour and
|
||||
water. After a few feedings, your starter should be back to normal.
|
||||
Take only a tiny bit of starter: 1-2 grams are enough. They already
|
||||
Take only a tiny bit of starter: 1--2 grams are enough. They already
|
||||
contain millions of microorganisms.
|
||||
|
||||
Mold favors aerobic conditions. This means that air is required in order
|
||||
@@ -268,13 +269,14 @@ outcompeted the acetic acid bacteria. This is a similar concept to pickled
|
||||
foods. By doing this you are essentially killing all live mold fungi. You
|
||||
might only have some spores left. With each feeding the spores will become
|
||||
fewer and fewer. Furthermore, it seems that lactic acid bacteria produce
|
||||
metabolites that inhibit mold growth. \cite{mold+lactic+acid+bacteria}
|
||||
metabolites that inhibit mold growth~\cite{mold+lactic+acid+bacteria}.
|
||||
|
||||
\begin{figure}[!htb]
|
||||
\includegraphics[width=\textwidth]{fungi-lactic-acid-interactions}
|
||||
\caption{The interaction of lactic acid bacteria and mold fungi.
|
||||
The authors Ce Shi et al. show how bacteria are producing
|
||||
metabolites that inhibit fungus growth. \cite{mold+lactic+acid+bacteria}}
|
||||
In~\cite{mold+lactic+acid+bacteria}, \citeauthor{mold+lactic+acid+bacteria}
|
||||
et al.\ show how bacteria are producing metabolites that inhibit fungus
|
||||
growth.}%
|
||||
\label{fig:fungi-lactic-acid-interactions}
|
||||
\end{figure}
|
||||
|
||||
@@ -287,7 +289,7 @@ is depleted and anaerobic lactic acid bacteria will start to thrive. Take a
|
||||
note of the smell your sourdough starter. If it was previously acetic
|
||||
it will now change to be a lot more dairy. Extract a bit of your mixture the
|
||||
next day by shaking everything first. Take 5g of the previous mixture, feed
|
||||
again with another 20g of flour and another 100g of water. After 2-3
|
||||
again with another 20g of flour and another 100g of water. After 2--3
|
||||
additional feedings your starter should have adapted. When switching back
|
||||
to a hydration of 100 percent the mold should have been eliminated. Please note that
|
||||
more tests should be conducted on this topic. It would be nice to really
|
||||
@@ -301,21 +303,21 @@ relaxes and can no longer hold the shape. However, during the course
|
||||
of baking, your dough is going to increase in size and inflate again.
|
||||
|
||||
If your dough however flattens out completely, it's a sign that
|
||||
you have fermented your dough for too long. Please refer to ~\ref{sec:overfermented-dough}
|
||||
where I explain about overfermented doughs. Your bacteria
|
||||
you have fermented your dough for too long. Please refer to~\ref{sec:overfermented-dough}
|
||||
where I~explain about overfermented doughs. Your bacteria
|
||||
has consumed most of your gluten network. That's why your
|
||||
dough fully collapses and stays flat during the bake. The
|
||||
\ch{CO2} and evaporating water will diffuse out of the dough.
|
||||
A related symptom is that your dough sticks to the banneton.
|
||||
When I starting baking I combated this with rice flour.
|
||||
When I~starting baking I~combated this with rice flour.
|
||||
It worked for me but it might be a false find. Please refer to
|
||||
section \ref{sec:overfermented-dough} for more details on why
|
||||
Section~\ref{sec:overfermented-dough} for more details on why
|
||||
rice flour is not a good idea to manage sticky doughs.
|
||||
|
||||
These days I gently rub my
|
||||
These days I~gently rub my
|
||||
dough with a bit of non-rice flour before placing it in
|
||||
the banneton. Now if the dough starts to stick to the banneton
|
||||
while I remove it I resort to a drastic measure. I immediately
|
||||
while I~remove it I~resort to a drastic measure. I~immediately
|
||||
grease a loaf pan and directly place the dough inside. The loaf
|
||||
pan provides a barrier and the dough can't flatten out as much.
|
||||
The dough won't be as fluffy but it will be super delicious if you love tangy bread.
|
||||
@@ -343,9 +345,9 @@ just a gigantic starter.
|
||||
|
||||
Sometimes a liquid, in many cases black liquid, gathers on top
|
||||
of your sourdough starter. The liquid might have a pungent
|
||||
smell to it. Many people confuse this with mold. I have seen
|
||||
smell to it. Many people confuse this with mold. I~have seen
|
||||
bakers recommending to discard the starter because of this liquid.
|
||||
The liquid is commonly known as {\it hooch}. After a while
|
||||
The liquid is commonly known as \emph{hooch}. After a while
|
||||
of no activity the heavier flour separates from the water. The flour
|
||||
will sit at the bottom of your jar and the liquid will stay on top.
|
||||
The liquid turns darker because some particles of the flour weigh
|
||||
@@ -357,7 +359,7 @@ the top.
|
||||
\begin{figure}[!htb]
|
||||
\centering
|
||||
\includegraphics[width=0.5\textwidth]{hooch}
|
||||
\caption{Hooch building on top of a sourdough starter. \cite{liquid+on+starter}}
|
||||
\caption{Hooch building on top of a sourdough starter~\cite{liquid+on+starter}.}%
|
||||
\label{fig:hooch}
|
||||
\end{figure}
|
||||
|
||||
@@ -383,7 +385,7 @@ as quite strong.
|
||||
\begin{figure}[!htb]
|
||||
\centering
|
||||
\includegraphics[width=1.0\textwidth]{ethanol-oxidation}
|
||||
\caption{Oxygen is required to create acetic acid \cite{acetic+acid+production}.}
|
||||
\caption{Oxygen is required to create acetic acid~\cite{acetic+acid+production}.}%
|
||||
\label{fig:ethanol-oxidation}
|
||||
\end{figure}
|
||||
|
||||
@@ -395,7 +397,7 @@ Your flavor will change to dairy compared to vinegary.
|
||||
You can't go back though. After the conversion your starter
|
||||
will never go back to acetic acid production because you have
|
||||
changed the tides towards primarily lactic acid fermentation.
|
||||
I like to have a separate rye starter. In my experiments
|
||||
I~like to have a separate rye starter. In my experiments
|
||||
rye starters tend to feature many acetic acid bacteria.
|
||||
This starter is excellent when you want to make a very hearty,
|
||||
strong-tasting bread. A pure rye bread tastes excellent when
|
||||
@@ -410,8 +412,8 @@ thick crackly crust is sometimes desired. The crust
|
||||
of your bread is created during the 2nd stage of the
|
||||
baking process once the steaming source of your
|
||||
oven has been removed. The dark colors are created by
|
||||
the process known as {\it Maillard reaction} and then followed
|
||||
by another process known as {\it caramelization}. Each
|
||||
the process known as \emph{Maillard reaction} and then followed
|
||||
by another process known as \emph{caramelization}. Each
|
||||
color of crust offers the taster a different aroma.
|
||||
|
||||
What happens quite often is that the crust becomes chewy after a day.
|
||||
@@ -423,11 +425,11 @@ This moisture will start to homogenize in the final bread and
|
||||
partially evaporate. The result is that your crust becomes chewy.
|
||||
|
||||
Similarly when storing your bread in a container or in a plastic
|
||||
bag, your crust is going to become chewy. I have no fix for this yet.
|
||||
I typically tend to store my breads in a plastic bag inside of my fridge.
|
||||
bag, your crust is going to become chewy. I~have no fix for this yet.
|
||||
I~typically tend to store my breads in a plastic bag inside of my fridge.
|
||||
This allows the moisture to stay inside of bread. When taking a slice
|
||||
I always toast each slice. This way some of the crispness returns.
|
||||
If you know of a great way, please reach out and I will update
|
||||
I~always toast each slice. This way some of the crispness returns.
|
||||
If you know of a great way, please reach out and I~will update
|
||||
this book with your findings.
|
||||
|
||||
\section{My dough completely tears after a long fermentation}
|
||||
@@ -445,13 +447,13 @@ wheat dough together, your dough will ultimately tear.
|
||||
|
||||
\begin{figure}[!htb]
|
||||
\includegraphics[width=1.0\textwidth]{tearing-dough}
|
||||
\caption{My dough tearing after 24 hours of no activity}
|
||||
\caption{My dough tearing after 24 hours of no activity.}%
|
||||
\label{fig:tearing-dough}
|
||||
\end{figure}
|
||||
|
||||
In the picture~\ref{fig:tearing-dough} I experimented with
|
||||
In the picture~\ref{fig:tearing-dough} I~experimented with
|
||||
using a starter that has not been fed for 30 days at room temperature.
|
||||
I tried to make a dough directly out of the unfed starter.
|
||||
I~tried to make a dough directly out of the unfed starter.
|
||||
Typically after a long period
|
||||
without feedings your microbes start to sporulate and go
|
||||
into hibernation mode. This way they can survive for a long
|
||||
@@ -480,7 +482,7 @@ as fluffy as it could be. The goal is to reach the right
|
||||
balance: Fluffy consistency from the yeast and a great,
|
||||
not-too-strong tang from the bacteria. This depends
|
||||
of course on what you are looking for in terms of taste
|
||||
in your bread. When making rye bread, I prefer to be more
|
||||
in your bread. When making rye bread, I~prefer to be more
|
||||
on the tangy side for instance. When the described balance
|
||||
is off, the first thing to check is your sourdough starter.
|
||||
|
||||
@@ -495,7 +497,7 @@ take 1 part of starter (10g) and feed it with 50g of flour
|
||||
and 50g of water. This way the microorganisms start
|
||||
the fermentation in a greenfield environment. This is
|
||||
similar to the 10 percent starter or 20 percent starter
|
||||
ratio that you use to make a dough. These days I almost
|
||||
ratio that you use to make a dough. These days I~almost
|
||||
never use a 1:1:1 ratio. This only makes sense when you
|
||||
are initially creating your starter. You want a sour
|
||||
environment so that your microorganisms outcompete
|
||||
@@ -504,7 +506,7 @@ to most pathogens that you do not want in your starter.
|
||||
|
||||
Another approach that can help is to convert your
|
||||
sourdough starter into a stiff starter as
|
||||
described in section \ref{section:stiff-starter}.
|
||||
described in Section~\ref{section:stiff-starter}.
|
||||
|
||||
\section{My starter does not double in size}
|
||||
|
||||
@@ -557,18 +559,19 @@ your dough has fermented.
|
||||
This is a sign that you should use less starter
|
||||
when making the actual dough.
|
||||
|
||||
Please refer to section \ref{section:readying-starter} "\nameref{section:readying-starter}"
|
||||
Please refer to
|
||||
Section~\ref{section:readying-starter}~``\nameref{section:readying-starter}''
|
||||
for more information on the topic.
|
||||
|
||||
\section{Should I autolyse my dough?}
|
||||
\section{Should I~autolyse my dough?}
|
||||
|
||||
In 95 percent of all cases, an autolysis
|
||||
makes no sense. Instead I recommend
|
||||
makes no sense. Instead I~recommend
|
||||
that you conduct a fermentolysis. You
|
||||
can read more about the autolysis process in
|
||||
section \ref{section:autolysis} and
|
||||
Section~\ref{section:autolysis} and
|
||||
more about the topic of fermentolysis
|
||||
in section \ref{section:fermentolysis}.
|
||||
in Section~\ref{section:fermentolysis}.
|
||||
|
||||
The fermentolysis combines all the benefits
|
||||
of the autolysis while eliminating disadvantages
|
||||
@@ -592,7 +595,7 @@ slower and you can ferment for a longer period. This
|
||||
is especially handy when baking with lower gluten flours.
|
||||
|
||||
You can read more about the topic of stiff sourdough
|
||||
starters in section \ref{section:stiff-starter}.
|
||||
starters in Section~\ref{section:stiff-starter}.
|
||||
|
||||
\section{What's the benefit of using a liquid sourdough starter?}
|
||||
|
||||
@@ -619,7 +622,7 @@ will need to use strong high-gluten flour when using
|
||||
this type of starter.
|
||||
|
||||
You can read more about the liquid starter
|
||||
in section \ref{section:liquid-starter}
|
||||
in Section~\ref{section:liquid-starter}
|
||||
|
||||
\section{My new starter doesn't rise at all}
|
||||
|
||||
@@ -632,7 +635,7 @@ You can also use a water filter with activated charcoal
|
||||
which will remove the chlorine.
|
||||
Alternatively, if you draw tap water into a pitcher or other
|
||||
container and let it sit, loosely covered, the chlorine
|
||||
should dissipate within 12-24 hours, and you have
|
||||
should dissipate within 12--24 hours, and you have
|
||||
the added advantage of automatically having
|
||||
room-temperature water.
|
||||
|
||||
@@ -644,7 +647,7 @@ Try to use organic unbleached flour to make
|
||||
the starter. Industrial flour can sometimes
|
||||
be treated with fungicides.
|
||||
|
||||
\section{I made a starter, it rose on day 3 and now not anymore}
|
||||
\section{I~made a starter, it rose on day 3 and now not anymore}
|
||||
|
||||
This is normal. As your starter is maturing, different
|
||||
microorganisms are activated. Especially during
|
||||
@@ -667,18 +670,18 @@ flour. The first bread might not go exactly as you
|
||||
planned, but you will get there eventually. Each
|
||||
feeding makes your starter stronger and stronger.
|
||||
|
||||
\section{My flour has low gluten content - what should I do?}
|
||||
\section{My flour has low gluten content --- what should I~do?}
|
||||
|
||||
You can always mix in a little bit of vital wheat gluten. Vital wheat gluten
|
||||
is concentrated extracted gluten from wheat flour.
|
||||
|
||||
I recommend that you add around 5 grams of wheat gluten for every 100 grams of
|
||||
I~recommend that you add around 5 grams of wheat gluten for every 100 grams of
|
||||
flour that you are using.
|
||||
|
||||
\section{What's a good level of water (hydration) to make a dough?}
|
||||
|
||||
Especially when starting to make bread, use lower amounts of water. This will
|
||||
greatly simplify the whole process. I recommend using a level of around 60
|
||||
greatly simplify the whole process. I~recommend using a level of around 60
|
||||
percent hydration. So for every 100 grams of flour use around 60 grams of water.
|
||||
This ballpark figure will work for most flours. With this hydration, you can
|
||||
make bread, buns, pizzas, and even baguettes out of the same dough.
|
||||
@@ -720,7 +723,7 @@ measure your dough's size increase.
|
||||
|
||||
Another option could be to use a more expensive pH meter to measure your
|
||||
dough's acidity buildup. You can read more about different ways of managing
|
||||
bulk fermentation in section ~\ref{section:bulk-fermentation}.
|
||||
bulk fermentation in Section~\ref{section:bulk-fermentation}.
|
||||
|
||||
\section{What's the best starter feeding ratio?}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user