Extreme 88% Hydration Sourdough (600g Flour): 469g Base + 52g Bassinage (1 Standard Loaf)
Ciabatta-style 88% formula on 600g flour (1254g batch) with 52g bassinage staging and -7g starter deduction.
Target 88% hydration on 600g flour requires accounting for 120g levain (60g flour / 60g water); otherwise 528g water yields 89.1% (+1.1% jump). Pouring 521g water (469g base + 52g splash) and 13.2g salt for a 1254g dough locks True Total Hydration at 88.03% (target 88%).
- Strict True Hydration Water
- 521gLocks True Total Hydration at 88.03% (target 88%, -7g)
- Unadjusted Apparent Water
- 528gPushes True Hydration to 89.1% (+1.1% surge)
- 20% Active Starter & Salt
- 120g / 13.2g60g hidden flour + 60g hidden water
- Stickiness & Rheology
- 5 / 5 StarsExtreme / Wet Handling (Extreme extensibility)
Batch Mass & Bassinage Sensitivity Grid (600g Flour / 521g Water)
Comparing 521g corrected water (-7g cut) against 528g apparent water (89.1% drift) on 600g flour.
| Batch & Seed Spec | Flour Breakdown | Levain Split | Corrected Water (88% Ref) | Salt & Dough Mass | Apparent vs Locked |
|---|---|---|---|---|---|
| 550g @ 86% (15% Seed) Smaller Loaf (-50g) | 550g + 42g = 592g (88%/600g ref) | 83g (42gF/41gW @ 100%) | 468g W (vs 473g app @ R1) | 11.8g salt (1101g dough) | 86.8% drift → 85.98% (86% goal) |
| 600g @ 86% (18% Seed) Lower Moisture (-2%) | 600g + 60g = 660g (88%/600g ref) | 108g (60gF/48gW @ 80%) | 520g W (vs 516g app @ R2) | 13.2g salt (1228g dough) | 85.5% drift → 86.06% (86% goal) |
| 600g @ 88% (20% Seed) [Calibrated Target] | 600g + 60g = 660g (88%/600g ref) | 120g (60gF/60gW @ 100%) | 521g W (vs 528g app @ R3) | 13.2g salt (1241g dough) | 89.1% drift → 88.03% (88% goal) |
| 600g @ 90% (22% Seed) Higher Moisture (+2%) | 600g + 66g = 666g (88%/600g ref) | 132g (66gF/66gW @ 100%) | 533g W (vs 540g app @ R4) | 13.3g salt (1265g dough) | 91.0% drift → 89.94% (90% goal) |
| 650g @ 90% (25% Seed) Larger Batch (+50g) | 650g + 72g = 722g (88%/600g ref) | 163g (72gF/91gW @ 125%) | 559g W (vs 585g app @ R5) | 14.4g salt (1372g dough) | 93.6% drift → 90.03% (90% goal) |
Live Parameter Solver for Extreme 88% Hydration Sourdough (600g Flou
Dial in custom baker's percentages and export your adjusted 521g formula for bake day.
Bassinage Mechanics for 600g Flour at 88% Hydration (521g Water)
Flour-water coupling on 600g base grain changes once 120g liquid levain (60g F / 60g W) enters the mixer: 528g main water creates 588g total water (89.1%, +1.1% overshoot). Scaling back 7g to 521g water over 660g total flour locks True Total Hydration at 88.03% (target 88%).
At 88.03% true hydration (581g total water ÷ 660g flour), your 600g flour dough exhibits extreme / wet handling handling (5/5 stars). Cutting 7g from 528g down to 521g (469g + 52g) with 13.2g salt prevents serum weeping.
Bench & Dutch Oven Protocol for 1 Standard Loaf (600g Flour @ 88% Hydration)
- Initial Water Binding (469g W on 600g F): Hydrate 600g flour using 469g water (leaving 52g for stage 2 of 521g) for 45 min.
- Levain & Salinity Lock (120g Starter + 13.2g Salt): Fold in 120g 100% starter and 13.2g salt with 52g water, avoiding 528g (89.1%) drift.
- Fold Cadence for 88% (5/5 Stickiness): Space 4 wet-hand tuck-and-folds across 2 hours to reinforce the 1254g (660g flour) network.
- Final Proof & Oven Spring (1 Standard Loaf): Cut bulk at +50% aliquot rise, cold-retard at 38°F overnight, and steam-bake in heavy cast iron at 450°F.
Cereal Chemistry & Bench Execution FAQs
How many loaves does 600g flour at 88% hydration (1254g) make?
A 600g flour formula with 521g water, 120g starter, and 13.2g salt produces 1254g total dough—ideal as 1 Standard Loaf at 88.03% (88%).
Why is salt 13.2g instead of 12g for 600g flour at 88%?
True 2.0% salinity counts the 60g flour inside your 120g starter (600g + 60g = 660g total flour × 2% = 13.2g salt), stabilizing the 1254g loaf at 88.03% (88%).
Why does 528g water make my 600g flour dough feel like 89.1%?
Your 120g of 100% starter adds 60g water and 60g flour, turning 528g water into 588g water over 660g flour (89.1%). Dropping 7g to 521g locks True Total Hydration at 88.03% (target 88%).