Temperature × recipe

Neapolitan Pizza (Sourdough) at 5862°F

Adjusted timing: 5.1h bulk + 61.2h proof (multiplier 2.55×).

Baseline bulk (76°F)
2h
Adjusted bulk
5.1h
Baseline proof
24h
Adjusted proof
61.2h
Multiplier
2.55×
Activity
sluggish
Target hydration
65%
Bake temp
900°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 Neapolitan Pizza (Sourdough)

Mix dough, short 2h bulk at room temp. Divide into 230g balls. Cold retard 24-48h in sealed containers. Take out 2h before baking. Stretch by hand to 12-inch round on floured surface (no rolling pin). Top minimally, launch onto pizza steel/stone at maximum oven temp. Bake until edges charred and cheese melted (2-6 min depending on heat).

Calculator pre-set to these values

Multiplier at 60°F
2.55×
Adjusted bulk ferment
5.1 h
Adjusted final proof
61.2 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); AVPN (Associazione Verace Pizza Napoletana) — Regulations.