Techniques

What is autolyse, and how long should it be?

Autolyse is the simplest step in bread that people argue about the most. Raymond Calvel, professor of baking at the French milling school ENSMIC, described the method in 1974 and gave it its name, taken from autolysis, the biological term for self-digestion. He meant something precise: flour and water, mixed only until no dry flour remains, then left alone. No salt, no yeast, no levain. What happens in that rest is the flour working on itself.

What happens during the rest

Two things run at once.

First, the flour hydrates. Water works its way into the protein and starch, and gluten proteins begin to link up on their own, without any mechanical work. A dough that rests twenty minutes needs noticeably less mixing to reach the same development. Less mixing means less oxidation, and less oxidation means more of the flour’s carotenoid pigments survive, which is why autolysed bread tends to have a creamier crumb and a fuller wheat flavour.

Second, enzymes get to work. Amylases start breaking starch into sugars that will later feed the fermentation and colour the crust. Proteases nick the protein strands, which makes the dough more extensible: it stretches further before it tears. That is the trait you want for an open crumb and easy shaping, and it is the trait that becomes a problem if the rest goes on too long.

How long, in practice

Flour	Rest	Why
White bread flour, 11 to 13 percent protein	20 to 40 minutes	Hydrates quickly, gluten is already strong
High-extraction or whole wheat	45 to 60 minutes	Bran takes longer to soften and absorb water
Rye above 30 percent	Skip it	Rye has little gluten to develop; a soaker does the same job
Very strong flour, above 14 percent	Up to 60 minutes	Extra extensibility helps a tight dough

Temperature matters as much as time. At 24 °C the enzyme activity is comfortable. In a hot summer bakery at 30 °C an hour of autolyse behaves like two, and the dough can start to feel slack and sticky before you have added anything to it.

Salt and leaven: the honest version

Calvel’s method excludes both. The reasoning is sound: salt tightens gluten and slows water uptake, and a levain begins fermenting, and acidifying, the moment it meets flour, which changes the gluten before it has had a chance to form.

In a production bakery, the exclusion has a cost. If the levain goes in after the rest, it has to be incorporated into a dough that has already come together, and that takes more mixing than adding it at the start. Many bakers add the levain with the flour and water and leave out only the salt; Hamelman, for one, describes the levain-in version as standard practice for sourdough. Others add everything and rest anyway. The results differ less than the arguments suggest. What you lose by adding salt early is a little extensibility, which shows up as a slightly tighter crumb. What you gain is one fewer step at four in the morning.

Write down what you actually do. A recipe that says “autolyse 45 minutes” but leaves the levain in from the start is a different recipe from one that follows the book, and the difference shows up in bulk fermentation timing.

Doing it on the bench

1. Weigh the flour and the water for the autolyse. Hold back a small amount of water, about five percent of the total, to add with the salt later; it dissolves the salt without dry patches. (Adding water late in the mix, in larger amounts, is what French bakers call bassinage.)
2. Mix on first speed, or by hand, only until no dry flour is visible. Thirty seconds in a spiral mixer is enough. Over-mixing here defeats the purpose.
3. Cover the bowl. Uncovered dough forms a skin that will not hydrate evenly.
4. Rest for the time in the table above, at the temperature you have. Note both.
5. Add the leaven and salt with the reserved water, and mix to development.

If the dough after the rest is already smooth and stretches into a thin sheet, you have a strong flour and can shorten the second mix. If it is shaggy and tears, the flour is weaker or the rest was short, and it needs the mixing you saved.

When to skip it

Enriched doughs with a lot of butter or sugar gain little; the fat coats the proteins anyway. Very high-enzyme flours, and any dough with diastatic malt added, can turn gummy with a long rest. And doughs built on a large, ripe levain that is already acidic get less benefit than a straight dough, because the acid does part of the extensibility work on its own.

The point of the rest is control. It gives you more extensibility with less work, as long as you know how long the rest was and how warm the room got.

Questions bakers ask

How long should autolyse be?

Twenty to sixty minutes covers most wheat doughs. Whole-grain and high-extraction flours benefit from the longer end. Beyond two hours the gains flatten and enzymes start to weaken the gluten you are trying to build.

Do you add salt during autolyse?

Strictly, no. Salt tightens gluten and slows hydration, which is the opposite of what the rest is for. Many bakeries add it anyway for practical reasons, and the dough is still fine. Call that a rest, not an autolyse, and expect a little less extensibility.

Can you autolyse overnight?

You can, in the fridge, but it is rarely worth it. Long rests at warm temperatures let proteases degrade gluten. A cold overnight rest works for stiff, low-enzyme doughs; for a standard sourdough it adds nothing that an hour would not.

Related

• How long to bulk ferment sourdough, and how to tell when it is done. Bulk fermentation is done when the dough has grown 30 to 75 percent, domes at the edges and jiggles as one mass. At 24 to 26 °C that takes four to six hours.
• Flour protein content for bread: what the number means and what to buy. Bread flour runs 11.5 to 13.5 percent protein; under 11 is pastry, over 14 suits enriched doughs and long fermentations. Protein quality matters as much as the number.
• Baker's percentages, explained simply. In baker's percentages, flour is always 100 and every other ingredient is a share of the flour. Water 70 means 700 g of water per kilo of flour, at any batch size.

Sources: Hamelman, Bread: A Baker's Book of Techniques and Recipes, 3rd ed.; Suas, Advanced Bread and Pastry; Calvel, The Taste of Bread. Updated 2026-09-09.