Temperature: what really drives pizza dough

Temperature sets the pace

I think of temperature as the engine of the dough. It controls the speed of every reaction that takes place while the dough rests: yeast activity, and also the enzymes that mature the dough. So it directly decides how long the rest will take.

It all comes down to one simple rule:

• raise the storage temperature and the rise gets shorter;
• lower the storage temperature and the rise gets longer.

Yeast activity follows temperature: the warmer the dough, the more active the yeast. At 4 °C (39 °F) or below, its fermentation activity drops to zero. The enzymes behind maturation work the same way: sluggish in the cold, faster as the temperature climbs towards their optimum. In the fridge, every reaction in the dough slows down, maturation included.

That is why the same recipe behaves differently in January and in July, and why a protocol only means something if its temperatures are respected.

The three temperatures I watch first

The first two are set at the mixer or on the bench. The third runs through the whole rest, and it weighs most on the final result.

Room temperature or controlled temperature

For storage, I separate two situations. Room temperature is whatever your kitchen is: you put up with it, it changes with the season and the time of day, and it is warmer than the fridge. Controlled temperature usually means the fridge: you choose it and it stays stable.

So the storage temperature is chosen on two criteria: the gluten structure your pizza needs, and how you organise your work. For a direct contemporary Neapolitan, bulk fermentation can happen at room temperature or in the fridge, but the final proof is usually cold, for good extensibility and dough balls that are easy to manage.

For traditional Neapolitan, the reference rules mention fermentation at 23 °C (73 °F), while recommending temperature- and humidity-controlled proofing chambers to cope with seasonal changes. Managing a traditional dough in the fridge is entirely possible and still gives a correct, authentic result.

The fridge: aim for 6–8 °C, never below 4 °C

Above 4 °C (39 °F), fermentation and maturation do not stop: they carry on, slowly. Below 4 °C, most of the chemical reactions of fermentation and maturation stop. The dough no longer “works”: it just waits.

My ideal range for a cold rest is 6–8 °C (43–46 °F). A fridge set too low freezes the dough in time instead of letting it mature slowly, so I suggest checking its real temperature with a thermometer.

The warm start before the fridge is not optional

Every time I use the fridge, I first get fermentation going with a pause at room temperature. This applies to bulk fermentation, to the final proof and even to making a preferment. Dough that goes into the fridge too soon may never start fermenting.

How long that pause lasts depends on the room temperature and on the dough temperature at the end of kneading: the lower they are, the longer the pause.

Room temperature also matters at the other end of the protocol: before a cold final proof if bulk fermentation was already cold, so the dough balls warm up again, and after the final proof, to bring them to the right temperature for stretching. These stages are covered in my article on bulk fermentation, balling and final proof.

Dough temperature at the end of kneading

I aim for 23–25 °C (73–77 °F) when kneading ends, within an acceptable range of 22–26 °C. At these temperatures the gluten network holds best and the dough is less sticky, so easier to handle. During kneading itself I keep the dough between 21 and 24 °C and never let it go above 28 °C (82 °F).

This temperature also decides how fast fermentation starts. Cooler dough starts more slowly: an advantage for a very high-hydration dough, a drawback for a protocol whose bulk fermentation happens in the fridge.

You control neither the room nor the heat the mixer adds. Your two levers are the water and, to a lesser degree, the flour. Hence the formula:

Water = 3 × target dough − room − flour − kneading heat

All in °C. Kneading heat is 1–3 °C by hand and much more with a mixer. Example by hand, with a target dough of 24 °C, a room at 22 °C and flour at 21 °C: 3 × 24 − 22 − 21 − 3 = 26 °C (79 °F). The water temperature calculator does the maths for you, biga included (50 − room temperature).

The formula is useful, especially by hand, but I always confirm it by experience, season after season and depending on how I knead.

In an indirect dough, the preferment also affects temperature. A biga or poolish straight from the fridge helps keep the dough cool during the final mix (careful when the room is cold). A preferment that rested at room temperature warms the dough from the start: when it is hot, I put it in the fridge for a few hours before the final mix.

Seasons and scheduling

The season changes the room temperature, and so the speed of the dough. I have three levers to keep results consistent:

1. Water. In midsummer, in a kitchen at 28 °C (82 °F), hand-kneaded dough is made with cool water, not room-temperature water. The water formula automatically compensates for seasonal swings.
2. The fridge. Controlled temperature makes the dough independent of the seasons: that is what gives me consistent results all year round. The trade-off is longer rests. A cold rest is also more forgiving: in my protocols, the 24 hours of cold bulk fermentation can be adapted to your schedule.
3. Yeast. The warmer it is and the longer the room-temperature rest, the less yeast you need. The yeast amount calculator estimates it from the temperature and the hours in the fridge, and the yeast converter switches between fresh and dried yeast.

Skipping the fridge entirely is possible, provided the room does not vary too much and the yeast is adjusted to its temperature. Indirect doughs, on the other hand, are fast: after balling, the dough balls are usually ready within 3–4 hours at 22–25 °C (72–77 °F). And for a biga in hot weather, above 21 °C (70 °F), I play it safe with 1–2 hours at room temperature followed by 24 hours in the fridge.

Bringing dough balls up to temperature before stretching

A direct dough ball fresh out of the fridge is too cold to stretch. I always leave it at room temperature long enough to warm up and finish rising.

The warm-up depends on the room temperature and on how far the dough balls have fermented: it is a time you calibrate, not a fixed value. Once the dough balls are at temperature, it all moves to the oven: see my article on baking Neapolitan pizza.