Temperature × recipe
Sourdough Pretzel at 88–95°F
Adjusted timing: 0.8h bulk + 3.1h proof (multiplier 0.39×).
- Baseline bulk (76°F)
- 2h
- Adjusted bulk
- 0.8h
- Baseline proof
- 8h
- Adjusted proof
- 3.1h
- Multiplier
- 0.39×
- Activity
- extreme-mold-risk
- Target hydration
- 58%
- Bake temp
- 450°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 Sourdough Pretzel
Mix stiff dough. 2h bulk at 76°F. Divide into 100g pieces. Roll into 18-inch ropes. Shape into pretzel twist. Cold retard uncovered 8-12h (dries surface). Dip in lye solution (or simmered baking soda solution) 20 sec. Place on baking sheet, sprinkle pretzel salt, slash with razor across belly. Bake 450°F for 12-15 min until deep mahogany.
Calculator pre-set to these values
- Multiplier at 92°F
- 0.39×
- Adjusted bulk ferment
- 0.8 h
- Adjusted final proof
- 3.1 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.