Flour reference · rye

Medium Rye Flour

1.080× absorption · 9.0010.50% protein · hydration 8095%

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Protein
9.00–10.50%
Absorption
1.080×
Hydration range
80–95%
Category
rye

About Medium Rye Flour

Medium rye contains most of the rye grain with moderate bran content. Rye proteins do not form gluten like wheat proteins — instead, rye structure comes from pentosans (soluble fiber) that absorb 8-10x their weight in water. This means rye dough is sticky, paste-like, and requires different handling than wheat. Hamelman's reference specs target 80-95% hydration for rye-dominant doughs. Central Milling's Organic Medium Rye is the US reference. At 20-40% in a blend with bread flour, medium rye adds color, flavor complexity (tangy, earthy), and extends keeping quality. At 100%, expect dense crumb and strong sour flavor.

Technique

Do NOT knead rye dough (tears pentosan structure). Mix to incorporate, then rest. Very short bulk ferment (2-3 hours at 76°F) — rye ferments fast. Wet hands for shaping. Use a pan or tight banneton. Bake at higher initial temp (500°F) for 15 minutes, then reduce. Internal temp 205-210°F for doneness.

Hydration guide for Medium Rye Flour

Baker's-percentage workable range: 80% — 95%. Absorption is 1.080× bread-flour baseline, so recipes written for bread flour need 8% more water when substituting Medium Rye Flour.

Full hydration guide for Medium Rye Flour

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)

    Baker's percentage is by weight, not volume — a 0.1 g scale is what makes the math on this page accurate.

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  • Dutch oven / combo cooker

    Traps steam for the first bake phase — the single biggest factor in oven spring and a blistered, glossy crust.

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  • Banneton proofing basket

    Wicks moisture and holds shape during the final proof, so high-hydration dough doesn't spread flat.

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  • Bread lame + bench scraper

    A sharp lame scores clean ears; a steel bench scraper handles wet, sticky dough without tearing the gluten.

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  • High-protein bread flour

    The math assumes ~12–14% protein. Real bread flour absorbs the hydration you calculate — all-purpose won't.

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  • Danish dough whisk

    Mixes shaggy, high-hydration dough in seconds without the gluey mess of a spoon or your hands.

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🎧 Or learn the craft by ear

The numbers here are the what; a good baking book is the why. An Audible trial gets you any title free — Michael Pollan’s Cooked(the “Air” chapter is the best story ever told about why bread rises) is a perfect first listen.

Start a free Audible trial →

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