Hydration × flour
70% Hydration Spelt Flour
Medium cells with some larger bubbles. Noticeable holes appearing. Chewy, moist, balanced.
✓ Within Spelt Flour's workable range (60–70%)
Is 70% hydration right for Spelt Flour?
Spelt Flour's workable hydration range is 60–70%. Its absorption multiplier is 0.96× bread flour. At 70%, you are in the sweet spot — the dough will handle predictably and produce the crumb described above.
Absorption math for Spelt Flour at 70%
A recipe written for bread flour at 70% hydration, when substituted with 100% Spelt Flour, becomes 67% effective hydration (because Spelt Flour absorbs 4% less water). Short autolyse (20-30 min max). Gentle stretch-and-folds (2 sets). Shorter bulk ferment (15-20% less time than bread flour). Spelt over-proofs quickly — watch for signs and shape slightly underproofed. Cold retard is essential for handling.
Technique at 70% hydration
Dough becomes visibly softer and stickier. Use wet hands or bench scraper. Starts requiring more careful handling to avoid degassing. Autolyse 45-60 min helps develop structure.
Calculator pre-set to 70%
Weights below assume 100% Spelt Flour. For blends, use the main calculator on a recipe page.
- Flour to add
- 450 g
- Water to add
- 300 g
- Salt
- 10 g
- Levain @ 100%
- 100 g
- Total dough
- 860 g
- Effective hydration
- 70%
How the math works
Total water = flour × hydration %. Your levain contributes 50 g flour + 50 g water — both count toward the totals. You add only the remainder as fresh flour and water.
Salt % is computed on total flour weight, not final-dough flour.