\begin{tikzpicture}[node distance = 4cm, auto]
  \node [start] (init) {Homogenize recipe ingredients};
  \node [block, right of=init] (wait1) {Wait\\15~minutes};
  \path [line] (init) -- (wait1);
  \node [block, right of=wait1] (knead) {Knead 5~minutes};
  \path [line] (wait1) -- (knead);
  \node [block, right of=knead] (wait2) {Wait\\15~minutes};
  \path [line] (knead) -- (wait2);
  \node [decision, below of=wait2, node distance=4cm] (windowpane_test) {Window-pane?};
  \path [line] (wait2) -- (windowpane_test);
  \path [line] (windowpane_test.east) -- node{No} ++(1, 0) -- node{} ++(0, 5.7) -|  (knead.north);
  \node [decision] at (windowpane_test -| knead) (more_water) {Bassinage for more water?};
  \path [line] (windowpane_test) -- node{Yes} (more_water);
  \node [block] at (wait1 |- more_water) (add_water) {Add water};
  \path [line] (more_water) -- node{Yes} (add_water);
  \path [line] (add_water.north east) -- (knead.south west);
  \node [decision, below of=more_water, node distance=4.5cm] (dough_sample) {Aliquot sample?};
  \path [line] (more_water) -- node{No} (dough_sample);
  \node [block] at (dough_sample -| wait2) (dough_ball) {Make round dough ball};
  \path [line] (dough_sample) -- node{No} (dough_ball);
  \node [block, below of=dough_sample] (extract_sample) {Extract sample};
  \path [line] (dough_sample) -- node{Yes} (extract_sample);
  \path [line] (extract_sample.north east) -- (dough_ball.south west);
  \node [success, below of=dough_ball] (begin_bulk) {Begin bulk fermentation};
  \path [line] (dough_ball) -- (begin_bulk);
\end{tikzpicture}