Pushing King Arthur Bread Flour (12.7% Protein) to 80% Hydration Near Its 80% Ceiling (390g W)
Upper-limit 80% test for King Arthur Unbleached Bread Flour (US Hard Red Winter/Spring, +0% margin under 80% max) with 39g bassinage.
Across 550g total flour (500g King Arthur Bread Flour at 12.7% protein / 0.52% ash plus 50g from 100g starter), King Arthur Unbleached Bread Flour rates [UPPER ARTISAN LIMIT] at 80% against its 72%–77% sweet spot and 80% max. Pouring 390g main water (440g system water) and 11g salt locks True Total Hydration at 80.0% (target 80%).
- Absorption Status
- UPPER80% Target vs. 80% Max Ceiling
- Flour Protein & Ash
- 12.7% / 0.52%US Hard Red Winter/Spring
- 500g Batch Main Water
- 390gWith 100g starter, locks True Total Hydration at 80.0% (target 80%)
- Optimal Sweet Spot
- 72%–77%No gluten fortifier required
King Arthur Bread Flour (12.7% Protein) vs King Arthur All-Purpose Flour Comparison at 80%
Evaluating King Arthur Unbleached Bread Flour (12.7% protein, 0.52% ash) across 80% ± 5% steps against its 72%–77% sweet spot and 80% ceiling.
| King Arthur Bread Flour Hydration Step | Corrected Water (80% Ref) | Protein, Ash & Sweet Spot | Benchmark Flour Comparison | Ceiling Margin & Rescue |
|---|---|---|---|---|
| 400g King Arthur Bread Flour @ 75% Low (-5%) | 290g W + 80g levain + 8.8g salt (440g totF / 80% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 268g W) | +5% buffer vs 80% cap (R1/80%) |
| 450g King Arthur Bread Flour @ 78% Near (-2%) | 341g W + 90g levain + 9.9g salt (495g totF / 80% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs Central Milling ABC+ Flour (77% max / 326g W) | +2% buffer vs 80% cap (R2/80%) |
| 500g King Arthur Bread Flour @ 80% [Core Ratio] | 390g W + 100g levain + 11.0g salt (550g totF / 80% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 335g W) | +0% buffer vs 80% cap (R3/80%) |
| 600g King Arthur Bread Flour @ 83% High (+3%) | 488g W + 120g levain + 13.2g salt (660g totF / 80% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs Central Milling ABC+ Flour (77% max / 435g W) | +9g VWG rescue for King Arthur Bread Flour @ 83% |
| 675g King Arthur Bread Flour @ 80% [Safe Peak] | 527g W + 135g levain + 14.9g salt (743g totF / 80% grid) | 12.7% prot / 0.52% ash (sweet 72–77%) | vs King Arthur All-Purpose Flour (72% max / 453g W) | +0% buffer vs 80% cap (R5/80%) |
Dynamic Stoichiometric Workbench (UPPER)
Test custom loaf weights or alternative fermentation schedules directly against the 12.7% / 0.52% benchmark above.
Pushing King Arthur Bread Flour (12.7% Protein) to 80% (80.0%) Without Losing Tenacity
King Arthur Unbleached Bread Flour (12.7% protein, 0.52% ash) is roller-milled for 80% (390g water) sourdough from unmalted US Hard Red wheat with high Alveograph P/L tenacity (80.0% true hydration). With zero malted barley amylase across a 351g autolyse and 39g bassinage, its starch resists liquefaction vs 400g (81.8%). Under a 80% (80.0%) regime using 390g water (351g + 39g) and 11g salt, 500g King Arthur Bread Flour requires zero VWG below its 80% cap.
FARINOGRAPH STABILITY (King Arthur Bread Flour): At 80.0% (80% target via 390g water and 11g salt), King Arthur Unbleached Bread Flour (12.7% protein, 0.52% ash) operates +0% under its 80% saturation limit (sweet spot 72%–77%) vs King Arthur All-Purpose Flour.
4-Step Autolyse, Bassinage & Coil-Fold Protocol for 500g King Arthur Bread Flour @ 80%
- Endosperm Swelling (King Arthur Bread Flour / 12.7% Prot): Combine 500g King Arthur Bread Flour and 351g water (70% soak) for 45 min.
- True-80% Calibration (390g W + 100g Levain): Incorporate 100g ripe culture, 11g salt, and 39g reserved water across 550g total flour (80.0%).
- Lamination & Coil Cadence (0.52% Ash): Perform 1 bench lamination and 3 coil folds at 30-min intervals on your 80% King Arthur Bread Flour dough.
- Overnight 38°F Retardation: Arrest fermentation at +50% rise, stitch in a breathable liner, chill 14 hrs, and bake 20m covered + 22m uncovered.
Key Baker's Math Questions (Absorption Status: UPPER)
How do I scale King Arthur Bread Flour at 80% hydration up to a 1000g 2-loaf batch?
Double the 500g King Arthur Bread Flour formula (390g water, 100g starter, 11g salt) to 1000g King Arthur Bread Flour, 780g main water, 200g starter, and 22g salt to lock 80.0% (80%).
How long should I autolyse 500g King Arthur Bread Flour at 80% (351g water)?
Soak 500g King Arthur Bread Flour (12.7% protein, 0.52% ash) in 351g water for 55–60 minutes before adding 100g levain, 11g salt, and 39g water (390g total, 80.0%).
How many coil folds does King Arthur Bread Flour need at 80% hydration?
For 500g King Arthur Bread Flour (12.7% protein, US Hard Red Winter/Spring) mixed with 390g water (80.0% / 80%), perform 4 wet-hand coil folds every 30 minutes below its 80% cap.