Hydration × flour

82% Hydration Medium Rye Flour

Classic ciabatta crumb — very irregular large holes, glossy interior, thin crackling crust. Maximum open-crumb for hearth shapes.

Within Medium Rye Flour's workable range (80–95%)

Shop Medium Rye Flour on Amazon →As an Amazon Associate, SourdoughHydration earns from qualifying purchases at no extra cost to you.

Is 82% hydration right for Medium Rye Flour?

Medium Rye Flour's workable hydration range is 80–95%. Its absorption multiplier is 1.08× bread flour. At 82%, you are in the sweet spot — the dough will handle predictably and produce the crumb described above.

Absorption math for Medium Rye Flour at 82%

A recipe written for bread flour at 82% hydration, when substituted with 100% Medium Rye Flour, becomes 89% effective hydration (because Medium Rye Flour absorbs 8% more water). 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.

Technique at 82% hydration

Dough is nearly batter-like. Hand-stretch on heavily floured surface; cut into rectangles with bench scraper. No shaping, no slashing. Bake on stone with initial steam.

Worked water math for a 500 g batch

Medium Rye Flour ingredient weights for 500 g flour at 82% hydration
Medium Rye Flour500 g (100%)
Water410 g (82%)
Salt10 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 82% exactly.

What Medium Rye Flour gives you at 82%

At 82% hydration you can expect a very open, glossy, holey crumb — the signature of a high-hydration hearth loaf. A very wet dough: minimal handling wins. Use wet hands and a bench scraper, coil or stitch folds only, a strong pre-shape, and a well-floured couche or banneton — this hydration rewards a light, confident touch and punishes over-working.

Medium Rye Flour at 82% — FAQ

How much water do I use for Medium Rye Flour at 82% hydration?

Multiply the flour weight by 0.82. For a 500 g batch of Medium Rye Flour that's 410 g water, plus about 10 g salt (2%). Medium Rye Flour absorbs 1.08× as much water as white bread flour, so it will feel a touch stiffer than the 82% number suggests.

Is 82% hydration right for Medium Rye Flour?

Yes — Medium Rye Flour's workable range is 80–95%, and 82% sits inside it, so the dough handles predictably and gives a very open, glossy, holey crumb — the signature of a high-hydration hearth loaf.

What crumb will Medium Rye Flour at 82% give me?

Expect a very open, glossy, holey crumb — the signature of a high-hydration hearth loaf. Classic ciabatta crumb — very irregular large holes, glossy interior, thin crackling crust. Maximum open-crumb for hearth shapes.

Is Medium Rye Flour at 82% beginner-friendly?

This hydration is rated advanced. A very wet dough: minimal handling wins. Use wet hands and a bench scraper, coil or stitch folds only, a strong pre-shape, and a well-floured couche or banneton — this hydration rewards a light, confident touch and punishes over-working.

Calculator pre-set to 82%

Weights below assume 100% Medium Rye Flour. For blends, use the main calculator on a recipe page.

Flour to add
450 g
Water to add
360 g
Salt
10 g
Levain @ 100%
100 g
Total dough
920 g
Effective hydration
82%
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.

Open 80% hydration guide →

To bake this recipe you need

Amazon links. We earn from qualifying purchases.

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.

Affiliate links. As an Amazon Associate, SourdoughHydration earns from qualifying purchases at no extra cost to you.

  • Digital kitchen scale (0.1 g)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.

    View on Amazon →
  • Dutch oven / combo cookerDutch oven / combo cooker

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

    View on Amazon →
  • Banneton proofing basketBanneton proofing basket

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

    View on Amazon →
  • Bread lameBread lame

    A sharp lame scores clean ears — the cut that decides whether the loaf opens up or bursts at the side.

    View on Amazon →
  • Bench scraperBench scraper

    Steel scraper handles wet, sticky high-hydration dough without tearing the gluten you just built.

    View on Amazon →
  • High-protein bread flourHigh-protein bread flour

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

    View on Amazon →
  • Danish dough whiskDanish dough whisk

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

    View on Amazon →
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 →

As an Amazon Associate, SourdoughHydration earns from qualifying purchases at no extra cost to you. More on how this is funded.

Medium Rye Flour at every hydration level

Medium Rye Flour usually works between 80% and 95% hydration — drier gives a stiffer dough, wetter a slacker one. Tap a level for the technique, the absorption math and a calculator set to it.

Medium Rye Flour at each hydration level: water per 500 g of flour and how each level compares to its usual range.
HydrationWater per 500 gFor Medium Rye Flour
55%275 gDrier than usual
60%300 gDrier than usual
65%325 gDrier than usual
70%350 gDrier than usual
72%360 gDrier than usual
75%375 gDrier than usual
78%390 gDrier than usual
80%400 gIn its range
82%this page410 gIn its range
85%425 gIn its range
90%450 gIn its range
95%475 gIn its range

Sources: Central Milling — Organic Medium Rye specifications; Hamelman, Bread (3rd ed.); Robertson, Tartine Bread.