Guide · Maturation

Maturation vs fermentation in pizza dough

Two different processes running together, and how the fridge pulls them apart.

By the Pizza Call · Updated July 23, 2026

English has one word, fermentation, for what Italian bakers split into two. They talk about lievitazione (the rise) and maturazione (the ripening) as separate clocks, and once you see them that way a lot of dough behaviour stops being a mystery. A dough can be fully risen yet still green, or ripe yet flat. That gap is why a beautifully puffed pizza can still taste of nothing.

Fermentation: the gas that lifts

Fermentation is the yeast producing carbon dioxide. The yeast eats the simple sugars in the flour, gives off CO2 and a little alcohol, and the gluten network traps the gas, so the dough inflates and fills with bubbles. It's visible and easy to read: you watch the volume roughly double. Its speed comes down to two things, how much yeast you use and how warm you keep it. More yeast or more heat, faster rise. For the dose itself, there's a guide on how much yeast.

Maturation: the enzymes that break things down

Maturation is the breakdown of starch and gluten by enzymes already in the flour. Amylase snips starch into simpler sugars; protease gradually relaxes the gluten. None of this shows up in the volume, so a dough can ripen without looking any different. Two things you'll notice come from here. Aroma and colour, because those simple sugars caramelise into flavour and a browner crust. And handling, because a relaxed gluten opens under your hands instead of springing back and tearing. Digestibility gets claimed for it too, and that one needs a section of its own further down. Maturation keeps its own pace, slower than the rise.

Two clocks, two speeds

Here's the crux. Both processes are driven by time and temperature, but not at the same rate. If the yeast races ahead, plenty of it and warm, the dough doubles and over-proofs before the enzymes have finished: you get a puffed but under-ripe crust, pale and bland. Slow the yeast down and maturation has time to catch up. The lever that pulls the two clocks apart is the fridge, which is exactly what cold fermentation means.

The fridge slows the gas, not the enzymes

At around 4 °C (40 °F) the yeast nearly stalls: gas production drops steeply and the dough barely grows in the fridge. The enzymes, though, keep working, slower but steady. So a cold stint buys you maturation hours without the dough blowing past its proof. That's the whole reason a long cold fermentation (24, 48, even 72 hours) is prized: the flavour of a long ripening, on a schedule you control. Mix on Friday, bake on Sunday.

In practice you combine time, temperature and the fridge like this: a short spell at room temperature to wake the yeast, then the fridge for the long maturation, then an hour or two back out so the balls warm up and finish rising. In the calculator you set the room hours and the fridge hours separately and watch the yeast requirement change.

Does long maturation really make pizza more digestible?

Here we part company with most pizza writing, including some we like. The claim that a 48-hour dough sits lighter on the stomach is contested by serious Italian food writers (Dissapore and Trezzi have both taken it apart), and the physiology under it is thinner than the confidence it's repeated with: the starch actually broken down during milling and maturation runs to single-digit percentages, and your own digestion copes with the rest without any help from the dough. Protease relaxes the gluten network, it doesn't dismantle the protein, which is why no length of ferment helps a coeliac.

So here's our position. A long, cool maturation reliably gives you more aroma, better colour and a dough that opens without fighting you, and that's reason enough to wait. Whether the pizza is easier to digest afterwards we can't claim with the same confidence, and a good deal of what people call heaviness comes from an underbaked base, too much yeast, or a third pizza nobody needed. We'd rather say that than repeat the slogan.

How long to mature (and why the flour decides)

Flour strength sets the maturation time. A weak flour (W under 220) ripens in a few hours and then falls apart; ask it for 48 hours and the gluten gives out. A strong flour (W 330 and up) needs the long haul to turn soft and extensible; give it only 6 hours and it bakes gummy and tough. The rule is short: the longer the maturation, the stronger the flour.

Put plainly, a medium 00 at W 240-280 covers the 8 to 12 hour window, 24 hours asks for W 330, 48 hours for W 380, and the 72-hour figure of W 420 is past what a single retail bag gives you, so it means blending in manitoba. Read those numbers as a rule of thumb rather than a standard: no mill publishes an official chart. The flour-strength guide has the detail.

Three ways this goes wrong

• Reading the rise as ripeness. Volume tells you fermentation, not maturation. A doubled ball can still be green.
• Straight to the fridge with no head start. Chill the dough the moment it's mixed and the yeast starts sluggish, so the balls struggle to wake up. Give it an hour at room temperature first.
• Expecting a 4-hour dough to taste like a 24-hour one. Aroma is a function of time, not an ingredient you can add at the mixer.

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