Gluten Development in Sourdough: Why Folds Work Better Than Kneading

Ask ten bakers how to make strong sourdough dough and you will hear ten answers: knead it, fold it, let it rest, let it ferment longer. They are all right, because they are all different routes to the same place. That place is a network of gluten, strong enough to trap gas and stretchy enough to expand.

Understanding how that network forms makes every sourdough recipe easier to follow, and it explains why a few quiet folds can do the work of ten minutes of kneading.

What Gluten Actually Is

Gluten is not an ingredient in the flour. It is something that forms when you add water. Wheat flour contains two proteins, glutenin and gliadin. Glutenin gives dough its strength and elasticity, and gliadin gives it extensibility, which is the ability to stretch without tearing. When water reaches them, they link together into a stretchy web. Working the dough lines these strands up and builds more bonds, so the network becomes stronger and more organized.

Why Folds Work

Traditional kneading uses vigorous work to build the web in a few minutes. Sourdough has a few reasons to prefer a gentler route. The dough is often wetter, which makes kneading messy. A long fermentation also lets the dough strengthen on its own, and the acid from the starter can eventually weaken the network if it is overworked.

A stretch and fold is a simple motion: grab one side of the dough, stretch it up gently, and fold it over the center, then rotate the bowl and repeat a few times. Each fold lines the strands up, evens out gas and temperature, and adds strength. The rest between folds gives the gluten time to relax and rebuild.

A Simple Fold Schedule

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How to Tell When It Is Strong Enough

• Windowpane. Take a small piece of dough and gently stretch it. If it stretches thin enough to see light through without tearing, the gluten is well developed.
• It holds its shape. The dough should mound slightly rather than flowing flat.
• It pulls away from the bowl in a smooth sheet when you stretch it.

Common Questions

Can I knead instead? Yes. Short slap-and-fold kneading on the counter for a few minutes works too, especially for lower-hydration doughs.

Can I overdo the folds? It is possible to overwork dough, especially late in bulk, which pushes out gas. Be gentle and stop when the dough feels strong.

What if my dough is slack even after folds? It may be overproofed or too wet for your flour. See dense, gummy, or sticky sourdough.

Related Reading

• Autolyse Explained
• What Fermentation Actually Does to Your Flour
• Sourdough Shaping and Sticking Problems
• Plain Sourdough Loaf

Strength comes from water, time, and a gentle hand.