Bread proofing time: definitions and formulas

The bread proofing time calculator estimates duration of 1st fermentation (bulk fermentation) and 2nd fermentation (final proof) based on:

1. yeast type (fresh compressed baker's yeast 7%, instant dry 2.5%, sourdough liquid 100% hydration 20-30%)
2. yeast percentage on flour weight
3. ambient fermentation temperature (18-30°C)
4. dough hydration (50-90% water/flour)
5. flour type (W 200-400 strength).

Modenese 1990 base formula "Italian Pizzaiolo Manual" Univ Pisa: proofing_time_h = (flour_g × 0.15) / (yeast_g × T°C × 1.2), example 500 g flour W 280 + 5 g fresh baker's yeast at 25°C: time = (500×0.15)/(5×25×1.2) = 75/150 = 0.5 hours = 30 min × 2-3 doublings.

Typical times: 1st rise (bulk) 1-3 hours at 24-26°C (volume doubling); 2nd rise (final proof) after shaping 30-90 min at 30-35°C (poke test: dent stays); cold retard fridge 4°C 12-24 hours (slow fermentation develops acetic, lactic, alcoholic aromas); autolyse (Calvel 1974 France) 30 min-1 hour room temperature flour+water before adding yeast (gluten development without fermentation); poolish 12-16 hours at 18-20°C 1:1 flour-water + 0.1-1% yeast (French liquid pre-ferment); biga 12-18 hours at 18°C 100:44 flour-water + 1% yeast (Italian solid pre-ferment for bread-pizza). Solid sourdough (LM) 50% hydration, pH 3.5-4.5, 25 g levain per kg flour, fermentation 4-12 hours at 26°C.

Italian PDO and TSG breads

Italian EU-protected breads:

• Pane di Altamura PDO (EU Reg. 1291/2003 Bari Puglia, durum semolina Triticum durum Appulo-Arcangelo-Duilio-Simeto varieties, mandatory sourdough, wood oven 250°C 60 min, min weight 500 g, 7-day shelf life)
• Pane Casareccio di Genzano PGI (EU Reg. 2400/1996 Roma, natural levain + bran)
• Pane Toscano PDO (EU Reg. 2016/183, no salt historic Pisa-Florence 1100 dispute)
• Coppia Ferrarese PGI (Ferrara Emilia, 4-horn shape)
• Pagnotta del Dittaino PDO (Enna Sicily, semolina)
• Pizza Napoletana TSG (EU Reg. 97/2010 Traditional Specialty Guaranteed, AVPN Associazione Verace Pizza Napoletana 1984 Antonio Pace Naples). Pizza Napoletana spec: flour W 220-380 P/L 0.4-0.7, hydration 55-62%, baker's yeast 0.1-3% or sourdough 5-20%, salt 40-60 g/L water, EVOO 0.5%, wood oven 485°C max 60-90 seconds, diameter 22-35 cm, crust 1-2 cm

Italian bread proofing examples

• Roman home bread 1 kg flour 0 W 280, 600 g water, 12 g salt, 7 g instant dry yeast at 25°C: 1st rise 2 hours (doubling); shape; 2nd rise 60 min at 28°C; oven 220°C 35 min
• Pane Altamura PDO 5 kg semolina durum wheat Appulo: 200 g sourdough (4%), 3.5 L water 18°C (70% hydration), 100 g salt; 1st rise 3 hours 26°C; 2 folds 30 min interval; "u sckuanète" shape (priest's cap); 2nd rise 90 min; wood oven 250°C 60 min
• Pizza Napoletana TSG 1 ball 250 g: 160 g flour W 280, 100 ml water (62% hydration), 5 g salt, 0.5 g fresh yeast; mix 20 min; bulk 8-12 hours 22°C; ball division 250 g; cold proof 24-48 hours 4°C; stretch 22-30 cm; wood oven 485°C 60 sec
• Veneto ciabatta with biga: biga 12 hours 18°C (300 g flour + 130 g water + 3 g yeast), then dough 700 g flour + 470 ml water + 18 g salt + matured biga; 1st rise 5 hours 24°C with 3 stretch-and-fold (S&F) every 30 min; division; 2nd rise 45 min on floured linen; oven 250°C steam 30 min
• Cold retard whole wheat: 800 g whole wheat flour + 500 g water + 16 g salt + 5 g yeast; 1st rise 1 hour 26°C + 18 hours fridge 4°C cold retard; deflate morning; 2nd rise 90 min 26°C; bake 230°C 40 min

Sourdough vs baker's yeast

Baker's yeast Saccharomyces cerevisiae (Pasteur 1857 Lille France, Hansen Carlsberg isolated 1881) commercial fresh compressed 7% 25 g cube (Lesaffre France 1853 world leader; Italy AB Mauri Bologna 1898; Caputo Naples 1924). Advantages: fast (1-3 hours); standardized; controllable. Disadvantages: flat aroma; bread storage 1-2 days; tendency to dry. Sourdough or natural yeast (Saccharomyces + Lactobacillus symbionts, industrial discovery Calvel 1974 France, Italian tradition 4,000 years Egypt-Mesopotamia): refresh 1-2/week to keep active; 50% solid hydration (Italy Tuscany) or 100% liquid (French levain liquide). Advantages: complex aromas (acetic, lactic, propionic); natural sourdough bread storage 7-14 days; natural antioxidant; iron-zinc bioavailability +30% (Lopez 2003 Eur J Nutr 42:301). Disadvantages: slow (4-12 hours); variable; constant maintenance. Italian LM bakeries: Forno Brisa Bologna (Pasquale Polito); Padoan Padova; Tonon Treviso; Bonci Roma "Pizzarium" Gabriele Bonci. Optimal acidity solid LM pH 4.0-4.5 / TTA total titratable acidity 12-15 ml NaOH 0.1N (Calvel 1974); liquid LM pH 3.5-4.0 TTA 8-12.

Temperature and hydration tables

Temperature exponentially affects fermentation (Arrhenius law: every +10°C doubles reaction speed). Time table at different temperatures same dough (2% baker's yeast): 4°C fridge 18-24 hours (cold retard, aromas); 15°C cellar 8-12 hours; 20°C cool ambient 4-6 hours; 24°C optimal 2-3 hours; 28°C summer 1.5-2 hours; 32°C tropical 1-1.5 hours (over-proof risk = alcoholic taste, collapsed structure). Sourdough optimal 26-28°C (LAB optimal 30-37°C but over-acidity risk). Hydration (% water/flour): 50-55% hard dough grissini, taralli; 55-60% standard bread French baguette; 60-65% home bread; 65-70% ciabatta; 70-80% no-knead Lahey 2006; 80-90% open crumb rustic country style. High hydration requires technique: autolyse 30 min-1h post water/flour pre-yeast; S&F stretch and fold 3-4 folds every 30 min vs classic mix+rise; coil fold TikTok 2022 home baking technique. Flour strength W: home bread W 220-260; ciabatta 280-320; Pizza Napoletana 280-340; brioche 300-380; panettone 380-450 (Mulino Marino Cossano Belbo, Mulino Quaglia Vighizzolo, Caputo Naples, Petra Quaglia).

Updated July 2026