Temperature × recipe
Ciabatta at 68–72°F
Adjusted timing: 4.1h bulk + 2.0h proof (multiplier 1.35×).
- Baseline bulk (76°F)
- 3h
- Adjusted bulk
- 4.1h
- Baseline proof
- 1.5h
- Adjusted proof
- 2.0h
- Multiplier
- 1.35×
- Activity
- moderate
- Target hydration
- 82%
- Bake temp
- 475°F
Why the timing shifts
Most home kitchens — typical year-round room temperature. Ferment slightly longer than 76°F baseline. Recipe times generally work as written with minor extensions (+20%). Good balance of schedule manageability and flavor development. Most Hamelman and Tartine formulas are written assuming this range.
Technique for Ciabatta
Mix everything (no autolyse needed at this protein level). 3-4 sets of stretch-and-folds in 2.5h bulk at 76°F. Dump onto heavily floured counter, gently stretch into rectangle. Cut into 3-4 rectangles with bench scraper (no deflating). Short proof 60-90 min on linen couche. Bake on preheated stone with steam for first 10 min at 475°F; total 20-22 min until deep golden.
Calculator pre-set to these values
- Multiplier at 70°F
- 1.35×
- Adjusted bulk ferment
- 4.1 h
- Adjusted final proof
- 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.