Temperature controls how fast dough ferments, and bakers manage it by aiming for a Desired Dough Temperature (DDT) — commonly 75–78°F for most breads. The main variable you can adjust to hit it is the temperature of the water you mix in.
The water-temp formula
DDT depends on several heat inputs: the flour temperature, the room temperature, the friction of mixing, and (if used) a preferment. To find the water temperature you need, multiply DDT by the number of factors, then subtract the others:
Worked example
With 3 factors (no preferment), a target of 76°F, flour at 70°F, room at 72°F, and a friction factor of 5°F: water = (76 × 3) − (70 + 72 + 5) = 228 − 147 = 81°F.
Too warm and dough over-ferments and goes slack; too cold and it lags. The friction factor (heat added by mixing) is estimated from experience — often around 5°F for hand-mixing, more for machines.
Frequently asked questions
What’s a good dough temperature? Around 75–78°F for most bread.
What is the friction factor? The heat your mixing method adds to the dough; estimate it from experience.
Why adjust water temperature? It’s the easiest lever to hit your target dough temp.