Grain Selection Guide

A stone mill wheel and hessian sacks of grain in a working flour mill

A quick reference for baking sourdough with grains other than white wheat. For the full detail on each one, read baking sourdough with different grains.

The 60-second version

  • Start at 20%. Replace a fifth of the white flour in a recipe you already know.
  • Wholemeal and rye want more water (+5–15%). Spelt, einkorn and emmer want less (−5–15%).
  • Wholegrain ferments faster. Check an hour early.
  • A tighter crumb is correct, not a failure.
  • One starter does all of it. No need for a separate culture per grain.

Quick reference

Grain Start at Water Watch out for
Wholemeal wheat 20–30% +5–10% Faster ferment, tighter crumb
Dark rye 20–30% +10–15% Sticky, not elastic. Do not over-handle
Light rye 10–20% +5% Ferments quickly
Spelt 20–30% −5% Collapses if over-fermented
Khorasan 20–30% baseline The easy one to start with
Einkorn 10–20% −10–15% Slack and sticky. Expect dense
Emmer / farro 15–25% −5% Weak structure
Durum / semolina 10–20% −5% Golden crumb, superb crust
Buckwheat 10–20% +5% Strong flavour, dominates fast
Oats 10–20% +10% Soak first for best results
Maize / polenta 10–15% +5% Crunch and colour
A note on gluten. Spelt, einkorn, emmer, khorasan and durum are all wheat and contain gluten. Rye and barley contain gluten. Buckwheat, rice, sorghum, teff, millet, maize, quinoa and amaranth are naturally free from it; oats usually are but are often milled alongside wheat.

Five blends worth making

Blend What you get
80% white + 20% wholemeal The everyday upgrade
85% white + 15% dark rye Deeper, tangier, keeps better
70% white + 30% spelt Sweet and nutty
80% white + 20% khorasan Golden and buttery
60% white + 30% wholemeal + 10% rye A proper country loaf

Start with a strong culture

Every grain here works with one starter. Buy a live sourdough starter and begin with the rye loaf.

See also the flour guide, the olive oil guide and the wine guide.