Hydration × flour
72% Hydration Spelt Flour
Increasingly open crumb, medium-to-large cells. Classic Pain au Levain territory. Chewy crust with moist interior.
⚠ Outside Spelt Flour's typical range (60–70%) — read below for handling
Is 72% hydration right for Spelt Flour?
Spelt Flour's workable hydration range is 60–70%. Its absorption multiplier is 0.96× bread flour. 72% is above Spelt Flour's typical range. The dough will be slack and may not hold shape in a free-form hearth loaf. Either reduce hydration to 70%, or blend Spelt Flour (40–60%) with bread flour for structural support.
Absorption math for Spelt Flour at 72%
A recipe written for bread flour at 72% hydration, when substituted with 100% Spelt Flour, becomes 69% 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 72% hydration
Dough requires strong gluten development (3-4 stretch-and-folds or coil folds). Shaping benefits from cold retard. Handle with wet hands or flour-dusted bench scraper.
Worked water math for a 500 g batch
| Spelt Flour | 500 g (100%) |
| Water | 360 g (72%) |
| Salt | 10 g (2%) |
Add your levain on top of these weights; the calculator below subtracts the flour and water it already contributes so the bench numbers land at 72% exactly.
What Spelt Flour gives you at 72%
At 72% hydration you can expect an open, custardy crumb with irregular holes and good chew. A slack, sticky dough: work with wet hands, use coil folds rather than aggressive stretches, give a full bench rest after pre-shaping, and shape decisively — hesitation lets it spread.
Spelt Flour at 72% — FAQ
How much water do I use for Spelt Flour at 72% hydration?
Multiply the flour weight by 0.72. For a 500 g batch of Spelt Flour that's 360 g water, plus about 10 g salt (2%). Spelt Flour absorbs 0.96× as much water as white bread flour, so it will feel a touch wetter than the 72% number suggests.
Is 72% hydration right for Spelt Flour?
72% is above Spelt Flour's usual 60–70% range — the dough will be slack and may spread. Reduce toward 70%, or blend Spelt Flour (40–60%) with bread flour for structure.
What crumb will Spelt Flour at 72% give me?
Expect an open, custardy crumb with irregular holes and good chew. Increasingly open crumb, medium-to-large cells. Classic Pain au Levain territory. Chewy crust with moist interior.
Is Spelt Flour at 72% beginner-friendly?
This hydration is rated intermediate. A slack, sticky dough: work with wet hands, use coil folds rather than aggressive stretches, give a full bench rest after pre-shaping, and shape decisively — hesitation lets it spread.
Calculator pre-set to 72%
Weights below assume 100% Spelt Flour. For blends, use the main calculator on a recipe page.
- Flour to add
- 450 g
- Water to add
- 310 g
- Salt
- 10 g
- Levain @ 100%
- 100 g
- Total dough
- 870 g
- Effective hydration
- 72%
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.