King Arthur Bread Flour (12.7% Protein, 0.52% Ash) at 70% Low Hydration: 335g Water Guide
Conservative 70% rheology for King Arthur Unbleached Bread Flour (US Hard Red Winter/Spring, 12.7% protein) vs its 72%–77% sweet spot.
Milled in the US Hard Red Winter/Spring class (12.7% protein / 0.52% mineral ash), King Arthur Unbleached Bread Flour peaks across 72%–77% up to a 80% ceiling—placing 70% in [CONSERVATIVE / STIFF (-2% Below Sweet Spot)]. Blending 500g King Arthur Bread Flour, 100g levain, 11g salt, and 335g water (385g total water ÷ 550g flour) locks True Total Hydration at 70.0% (target 70%) vs 72.7% at 350g.
- Absorption Status
- CONSERVATIVE70% Target vs. 80% Max Ceiling
- Flour Protein & Ash
- 12.7% / 0.52%US Hard Red Winter/Spring
- 500g Batch Main Water
- 335gWith 100g starter, locks True Total Hydration at 70.0% (target 70%)
- Optimal Sweet Spot
- 72%–77%No gluten fortifier required
King Arthur Bread Flour 2D Hydration & Benchmark Matrix Around 70% (70.0%)
Mass-balance water deductions (-15g from 350g) and 80% ceiling headroom for King Arthur Bread Flour around 70% hydration.
| King Arthur Bread Flour Hydration Step | Corrected Water (70% Ref) | Protein, Ash & Sweet Spot | Benchmark Flour Comparison | Ceiling Margin & Rescue |
|---|---|---|---|---|
| 400g King Arthur Bread Flour @ 65% Base (-5%) | 246g W + 80g levain + 8.8g salt (440g totF / 70% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 268g W) | +15% buffer vs 80% cap (R1/70%) |
| 450g King Arthur Bread Flour @ 68% Tight (-2%) | 292g W + 90g levain + 9.9g salt (495g totF / 70% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs Central Milling ABC+ Flour (77% max / 326g W) | +12% buffer vs 80% cap (R2/70%) |
| 500g King Arthur Bread Flour @ 70% [Bench Target] | 335g W + 100g levain + 11.0g salt (550g totF / 70% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 335g W) | +10% buffer vs 80% cap (R3/70%) |
| 600g King Arthur Bread Flour @ 73% Open (+3%) | 422g W + 120g levain + 13.2g salt (660g totF / 70% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs Central Milling ABC+ Flour (77% max / 435g W) | +7% buffer vs 80% cap (R4/70%) |
| 575g King Arthur Bread Flour @ 80% [Saturation] | 449g W + 115g levain + 12.7g salt (633g totF / 70% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 386g W) | +0% buffer vs 80% cap (R5/70%) |
Custom Batch Recalculation Engine
Fine-tune starter hydration between 50% stiff and 125% liquid while keeping your flour brand Ă— absorption benchmark ratios locked.
Why King Arthur Bread Flour (12.7% Protein / 0.52% Ash) Feels Firm at 70% (335g Water)
King Arthur Unbleached Bread Flour (12.7% protein, 0.52% ash) is roller-milled for 70% (335g water) sourdough from unmalted US Hard Red wheat with high Alveograph P/L tenacity (70.0% true hydration). With zero malted barley amylase across a 302g autolyse and 33g bassinage, its starch resists liquefaction vs 350g (72.7%). On a 70% (70.0%) build with 335g corrected water (cutting 15g from 350g / 72.7%), King Arthur Bread Flour operates at [CONSERVATIVE / STIFF (-2% Below Sweet Spot)].
SWEET-SPOT & CEILING CALIBRATION: Using 335g main water (302g soak + 33g bassinage) on 500g King Arthur Bread Flour (12.7% protein, 0.52% ash) locks 70.0% (70%) with +10% headroom below 80% vs Central Milling ABC+ Flour.
Bench & Cold-Retard Execution for King Arthur Bread Flour Near Its 80% Ceiling
- Stage-1 Autolyse (King Arthur Bread Flour @ 0.52% Ash): Mix 500g King Arthur Bread Flour with 302g water (saving 33g of 335g) and rest 45 min.
- Stage-2 Levain Lock (100g Starter + 33g W): Slap-and-fold 100g levain, 11g salt, and 33g water into 500g King Arthur Bread Flour to lock 70.0% (70%).
- Coil-Fold Tenacity (12.7% Protein): Execute 4 gentle coil folds 30 min apart, respecting King Arthur Bread Flour's 72%–77% sweet spot.
- Final Shape & 450°F Bake: Seal seams in a rice-floured liner at +50% rise, chill overnight at 38°F, and bake covered at 450°F.
Technical Q&A: King Arthur Bread Flour (12.7% Protein, 0.52% As
How much water do I need for 500g of King Arthur Bread Flour at 70% hydration?
With 500g King Arthur Bread Flour and 100g active 100% starter, weigh 335g main water (302g autolyse + 33g bassinage) and 11g salt to lock 70.0% (70%) instead of 350g (72.7%).
Can I use King Arthur Bread Flour at 70% in a Tartine-style sourdough recipe?
Yes—King Arthur Bread Flour (12.7% protein, 80% cap) supports 70% when 335g water (302g + 33g) locks 70.0% with 100g starter.
What happens if King Arthur Bread Flour goes 10% closer to its 80% limit at 70%?
At 70% (335g water, 70.0%), 500g King Arthur Bread Flour (12.7% protein) still holds a +10% buffer before reaching its 80% (390g water) ceiling.