Hydration × flour
75% Hydration Dark Rye Flour (Pumpernickel)
Open crumb with distinct holes of varying sizes. Moist, chewy, glossy cell walls. The classic Tartine country-loaf target.
⚠ Outside Dark Rye Flour (Pumpernickel)'s typical range (90–110%) — read below for handling
Is 75% hydration right for Dark Rye Flour (Pumpernickel)?
Dark Rye Flour (Pumpernickel)'s workable hydration range is 90–110%. Its absorption multiplier is 1.1× bread flour. 75% is below Dark Rye Flour (Pumpernickel)'s typical range. The dough will be stiff and hard to fully develop. Consider moving up to 90% for better extensibility.
Absorption math for Dark Rye Flour (Pumpernickel) at 75%
A recipe written for bread flour at 75% hydration, when substituted with 100% Dark Rye Flour (Pumpernickel), becomes 83% effective hydration (because Dark Rye Flour (Pumpernickel) absorbs 10% more water). Dark rye requires very wet, paste-like dough. Scald (mix flour with boiling water) for 24 hours as pre-ferment to maximize water absorption. Pan loaves only — dough is too wet to freestand. Long, slow bake at 325-350°F for 4+ hours for traditional pumpernickel character.
Technique at 75% hydration
The sweet spot for most hearth sourdough. Requires confident stretch-and-folds (3-4 sets). Wet hands essential for shaping. Cold retard improves handling and ear development during scoring.
Calculator pre-set to 75%
Weights below assume 100% Dark Rye Flour (Pumpernickel). For blends, use the main calculator on a recipe page.
- Flour to add
- 450 g
- Water to add
- 325 g
- Salt
- 10 g
- Levain @ 100%
- 100 g
- Total dough
- 885 g
- Effective hydration
- 75%
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.