06 — Intermediate

Dough Temperature

Why it matters

Temperature is the single most important variable in bread baking. It controls fermentation speed, which controls how long bulk fermentation takes, how much flavor develops, and whether the dough overproofs or underproofs.

A dough that's 5°F warmer than expected will finish bulk fermentation hours earlier. A dough that's 5°F cooler will take hours longer. Recipes that say "4–6 hours" are assuming a specific temperature range. If your kitchen is different, your timing will be different.

Target dough temperature

The ideal final dough temperature (FDT) for most sourdough is 75–78°F (24–26°C). At this temperature, bulk fermentation takes 4–6 hours and produces good flavor without overproofing.

Measure dough temperature with an instant-read thermometer immediately after mixing. If it's too warm, use cooler water next time. If it's too cold, use warmer water.

Controlling temperature with water

Water temperature is the one variable you can control precisely before mixing. The formula:

Water temp = (FDT × 3) − flour temp − room temp − friction factor

Friction factor is typically 0–2°F for hand mixing. For most home bakers, a simpler approach: if your kitchen is 68°F, use 80°F water. If your kitchen is 75°F, use 70°F water. Adjust from there based on results.

Fermentation temperature guide
drag
75°F
24°C
Bulk fermentation
46 hr
Ideal range

Ideal range. Most recipes assume this.

Want to go deeper?

The course lesson covers the full FDT formula, how to adapt to your kitchen, and how to use temperature as a scheduling tool.

“Dough Temperature: Precision and Control” is a 10-minute lesson that shows how to calculate water temperature for any kitchen condition and how to use cold retard to fit baking into your schedule.

See the full course →
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