Dark Rye Flour (Pumpernickel)
1.100× absorption · 8.00–9.00% protein · hydration 90–110%
- Protein
- 8.00–9.00%
- Absorption
- 1.100×
- Hydration range
- 90–110%
- Category
- rye
About Dark Rye Flour (Pumpernickel)
Dark rye (pumpernickel flour) is coarser, contains more bran, and has the deepest flavor of all rye flours. Absorption is 10% higher than bread flour baseline. Ash content 2.0%+ indicates high mineral content from extensive bran inclusion. Used in traditional German pumpernickel (100% dark rye, 24+ hour steam bake) and Scandinavian rye breads. Hamelman's pumpernickel formula targets 95-100% hydration with 100% dark rye. Can also be used as 10-20% of a wheat-rye blend for strong rye character without going fully rye. Central Milling, Bob's Red Mill, and Janie's Mill are US reference sources.
Technique
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.
Hydration guide for Dark Rye Flour (Pumpernickel)
Baker's-percentage workable range: 90% — 110%. Absorption is 1.100× bread-flour baseline, so recipes written for bread flour need 10% more water when substituting Dark Rye Flour (Pumpernickel).
Related references on this site
- Dark Rye Flour (Pumpernickel) at 95% hydration — formula — calculator pre-set with this flour and hydration combination
- Dark Rye Flour (Pumpernickel) hydration range deep-dive — 90-110% workable range with technique notes
- Guide: baker's percentage explained — how protein, absorption, and hydration combine in the math
- Guide: whole-grain hydration adjustments — absorption multipliers for whole-wheat, rye, spelt, einkorn
- All 15 flour types — grouped by category (refined, whole-wheat, rye, ancient-grain)
- Reverse calculator: water → hydration % — you have a flour-and-water weight, want the hydration
The gear that makes the math work
A short, honest baking kit. The scale matters most — every weight on this page is in grams. The Dutch oven is what turns a good crumb into a great crust.
- Digital kitchen scale (0.1 g)View on Amazon →
- Dutch oven / combo cookerView on Amazon →
- Banneton proofing basketView on Amazon →
- Bread lame + bench scraperView on Amazon →
- High-protein bread flourView on Amazon →
- Danish dough whiskView on Amazon →
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