Cold fermentation – why the fridge makes better dough
The fridge adds flavour and flexibility, but only if your flour holds up. How to plan 24, 48 and 72 hours at a normal fridge temperature of 4–8 °C.
Quick answer: cold fermentation means the dough balls ferment in the fridge (4–8 °C) instead of at room temperature. It gives flavour more time to develop and makes the dough easier to plan around. Common times are 24, 48 or 72 hours – our house method runs 48 hours.
Why the fridge makes the dough better
At low temperature the yeast works much more slowly (see the table in fermentation), which gives enzymes and flour components plenty of time to break starch and protein down into flavour compounds – without the dough overproofing. The result is usually described as a rounder, more complex flavour than a quick room-temperature rise.
24, 48 or 72 hours
| Time in the fridge (4 °C) | Result | Requires |
|---|---|---|
| 24 hours | Noticeable flavour development, still a fairly ”clean” dough | Standard flour is enough |
| 48 hours | Our house method – clear flavour, still easy to handle | Flour with enough strength (W value) to hold together that long |
| 72 hours | Deeper, slightly tangier flavour | Stronger flour (higher W value), otherwise the dough risks going too slack |
The longer the fermentation, the more the strength of the flour matters – a weak flour simply can’t hold its structure through 72 hours. Use the calculator to adjust the yeast precisely to the time you choose.
Where does AVPN stand on this?
The AVPN disciplinare 2024 specifies a total fermentation time of 12–24 hours, in a proofing chamber at 18–20 °C – so not fridge temperature, and no more than 24 hours in total. Our house method’s 48 hours in the fridge therefore sits outside the disciplinare’s limits. We say so openly: it is a deliberate choice for flavour and planning in a home kitchen, not a claim that it is ”more Neapolitan”.
In practice: temperature and storage
Home fridges normally run at 4–8 °C – aim for the cooler part if you can, ideally near the vegetable drawer rather than the door. Store the balls airtight (a lidded container or a tight-fitting dough tray) so they don’t dry out or pick up other smells from the fridge. Take them out 2–3 hours before baking so they come up to room temperature before stretching – a cold, stiff dough is harder to stretch without tearing.
Read more about the whole process in Neapolitan pizza dough, about yeast quantities in yeast, and about how to tell the dough is actually ready in fermentation.
