How to do the windowpane test on wheat bread dough
Stretch a rested sample gently and look for a thin membrane, with the mixing method in mind.
A windowpane is a small piece of dough stretched thin enough to let light through. It shows how far the gluten network can extend at this stage of mixing. It answers a different question from “Has the loaf risen enough?” Perform it when a wheat bread recipe asks you to judge kneading or mixing development.
Pinch off a small sample, flatten it and let it relax briefly. Hold the edges with both hands and stretch out the middle a little at a time, turning the sample to spread the pull. If you yank one corner, it can tear even when the rest could stretch further. Compare a thin, flexible film with a piece that breaks almost as soon as it is pulled.
If the recipe expects a strong windowpane and the rested sample tears immediately, knead a little longer and try a fresh piece. A dough meant to develop through folds during a long rise may be ready for its next step without a full windowpane at the first mix. Leave gluten-free doughs out of this comparison; the test is about a wheat gluten network.
