Temperature × recipe

Pan de Cristal at 5862°F

Adjusted timing: 10.2h bulk + 2.5h proof (multiplier 2.55×).

Baseline bulk (76°F)
4h
Adjusted bulk
10.2h
Baseline proof
1h
Adjusted proof
2.5h
Multiplier
2.55×
Activity
sluggish
Target hydration
95%
Bake temp
500°F

Why the timing shifts

Cold kitchen territory — cellars, garages, unheated rooms. Ferment time is 2.5× longer than baseline 76°F. Excellent for flavor development when you have the patience. If your kitchen runs this cold naturally, either move dough to a warmer spot or extend bulk and proof times dramatically. Consider using 20-25% levain instead of 15-20% to compensate for slow activity.

Technique for Pan de Cristal

Mix in stand mixer: all flour, 60% of water, oil, salt, levain. Gradually add remaining water over 5-10 min while mixing until dough is fully developed but extremely loose. 4 sets of coil folds every 30 min in first 2h, then rest for 2 more hours. Gently tip onto heavily oiled sheet pan. Cut into 4-6 rectangles with oiled bench scraper. Short 1h proof. Bake 500°F with steam, 18-22 min.

Calculator pre-set to these values

Multiplier at 60°F
2.55×
Adjusted bulk ferment
10.2 h
Adjusted final proof
2.6 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); Catalan bakery tradition — Pan de Cristal formulas.