Temperature × recipe

Ciabatta Integrale at 8895°F

Adjusted timing: 1.2h bulk + 0.6h proof (multiplier 0.39×).

Baseline bulk (76°F)
3h
Adjusted bulk
1.2h
Baseline proof
1.5h
Adjusted proof
0.6h
Multiplier
0.39×
Activity
extreme-mold-risk
Target hydration
85%
Bake temp
475°F

Why the timing shifts

Very hot — avoid. Mold risk rises sharply above 85°F. Fermentation outpaces structural development. Levain becomes unbalanced toward lactic acid producers, creating cloying sour flavor. Only use briefly for refreshing starters or if absolutely unavoidable. Move dough to cooler location, or skip this bake and wait for cooler conditions. If baking must happen, reduce levain to 8%, bulk 90 min max, get into refrigerator immediately after shaping.

Technique for Ciabatta Integrale

Autolyse whole flours 45 min, then mix with levain, salt. 3-4 coil folds. 3h bulk. Dump, stretch, cut into rectangles. Short 90 min proof. Bake on stone with steam.

Calculator pre-set to these values

Multiplier at 92°F
0.39×
Adjusted bulk ferment
1.2 h
Adjusted final proof
0.6 h
How the math works

Multipliers are piecewise-linear interpolations between reference points measured by Myhrvold et al. in Modernist Bread vol 3. 76°F is the baseline (1.0×); every 10°F drop roughly doubles fermentation time, and every 10°F rise roughly halves it.

Sources: Myhrvold, Modernist Bread vol 3 (temperature multipliers); Modern Italian artisan bakery — whole-grain ciabatta variants.