Sourdough Stretch and Fold Timer

Stretch and fold builds gluten structure during bulk fermentation without kneading. Each set takes seconds — lift one side of the dough, stretch it up, fold it over, rotate, repeat around the bowl — and the work happens in the resting time between sets, when the gluten relaxes and sets into its new arrangement.

Thirty minutes between sets is the common interval, and four sets over the first two hours of bulk is a typical pattern. That spacing is convention rather than a rule: what matters is that the dough gets time to relax between sets, since folding a tense dough tears the structure you are trying to build. If the dough resists and threatens to rip, you have come back too soon.

Coil folds for wetter dough

A coil fold lifts the dough from the middle with both hands and lets the ends tuck under themselves as it settles. It handles high-hydration dough more gently than a stretch and fold, because you are not pulling against a slack, sticky mass.

Many bakers use stretch and folds for the first set or two, when the dough is at its least developed, then switch to coil folds as it gains strength. Wet hands, not floured ones — flour on the surface works into the dough and creates streaks.

Knowing when to stop

Stop folding when the dough holds its shape, feels smooth and elastic, and passes a windowpane test — a small piece stretched thin enough to see light through without tearing.

Folding beyond that point is not neutral: late folds degas dough that has already developed and can knock back rise you want to keep. Most recipes finish their folds in the first half of bulk and leave the dough undisturbed after that.

Folding in the container or on the bench

Folding in the container is faster, keeps the dough warm and loses no hydration to the bench, which is why most sourdough recipes assume it. A bench fold gives more forceful development and suits a dough that has stayed stubbornly slack after two or three in-container sets.

If you move to the bench, resist adding flour. A wet bench scraper and damp hands handle sticky dough far better than dusting does, and every gram of bench flour changes the hydration you spent the mix getting right.

A common four-set pattern over the first two hours of bulk. Intervals are convention — the requirement is that the dough relaxes between sets^[1].

A typical stretch and fold schedule
Set	Clock from start of bulk	Fold type	Dough should feel
1	0:30	Stretch and fold	Slack, sticky, shapeless
2	1:00	Stretch and fold	Beginning to hold together
3	1:30	Coil fold	Smoother, some resistance
4	2:00	Coil fold	Elastic, holds a dome
—	2:00 onward	No more folding	Left undisturbed to rise

If the dough resists and threatens to tear, you have returned too soon — wait longer between sets.
Use wet hands rather than flour; surface flour works into the dough and leaves streaks.

Source: On Food and Cooking: The Science and Lore of the Kitchen — gluten development (ISBN 978-0-684-80001-1)

Sources

On Food and Cooking: The Science and Lore of the Kitchen — gluten development (ISBN 978-0-684-80001-1) , Harold McGee, Scribner (Revised edition, 2004) — accessed 2026-07-28

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❓ Frequently Asked Questions

How often should I stretch and fold?

Every 30 minutes is the usual interval, with four sets over the first two hours of bulk. That spacing is convention rather than a rule — what matters is that the dough relaxes between sets, because folding a tense dough tears the structure you are building.

What is the difference between a stretch and fold and a coil fold?

A stretch and fold lifts one side, stretches it up and folds it over, rotating around the bowl. A coil fold lifts from the middle with both hands and lets the ends tuck under. Coil folds handle high-hydration dough more gently, so many bakers switch to them as the dough gains strength.

When should I stop folding?

When the dough holds its shape, feels smooth and elastic, and passes a windowpane test. Folding past that point degasses dough that has already developed and knocks back rise you want to keep — most recipes finish folds in the first half of bulk.

The dough tears when I fold it. What is wrong?

You have come back too soon. The gluten has not relaxed since the last set, so stretching it tears rather than extends it. Wait longer between sets — the resting time is where the development actually happens.

Should I use flour or water on my hands?

Water. Flour on your hands works into the surface of the dough and leaves streaks that never fully incorporate. Wet hands release sticky dough just as effectively without changing its hydration in patches.

Do stretch and folds replace kneading entirely?

For most sourdough, yes. They develop gluten through repeated gentle extension and rest rather than sustained mechanical work, which suits wet doughs that would be difficult to knead by hand in the first place.