Cold ferment: how long and why
Why the fridge makes better pizza, and how to time it.
What cold fermentation is
After mixing and a short rest at room temperature, the dough proofs slowly in the fridge — typically 2–6°C — for anywhere from 24 to 72 hours or more. The cold doesn't stop fermentation, it just slows it to a crawl, which is exactly the point.
Why it makes better pizza
Slow, cold fermentation develops flavor — organic acids and aromatic compounds — that a fast warm proof never gets the chance to. It also improves texture and digestibility, and firms the dough so it's easier to shape. And it's convenient: the fridge buys you a wide, forgiving window.
How long?
24 hours is a good minimum for a noticeable improvement; 48–72 hours is the sweet spot for many bakers. How far you can push depends on flour strength — a high-W flour holds up for 4–5 days, while a weaker flour starts to break down past 2–3. See flour grade and strength for choosing one.
Yeast and the cold
Cold dough needs much less yeast than a fast room-temperature proof — fermentation roughly halves for every 10°C you drop. The calculator's proofing schedule estimates the yeast for you from a room-temp stage plus a fridge stage. See yeast types if you're converting to fresh or active dry.
A simple schedule
Mix, rest 1–2 hours at room temperature, ball, then 24–72 hours in the fridge. Take the dough out 1–3 hours before baking so it relaxes and comes to room temperature — cold dough fights back and tears.
Plan a cold ferment in the calculator →
FAQ
How long can pizza dough cold ferment?
Commonly 24–72 hours. Strong, high-W flour can go 4–5 days; weaker flour begins to break down past about 2–3 days.
Should I let cold dough warm up before baking?
Yes — take it out 1–3 hours ahead so the gluten relaxes and the dough stretches without tearing.