Whole wheat, rye and oats contribute different properties. Rolled oats and oat flour are not interchangeable descriptions of the same flour component.
What to compare
When comparing formulas, state how the oats are used and whether grain has been soaked. Whole-grain dough is not guaranteed to ferment more slowly: flour, inoculation and temperature matter. Keep a water range tied to the exact flour blend.
Quantities in this example
- 300 g whole-wheat flour
- 100 g rye flour
- 100 g rolled oats or oat flour
- 350–375 g water
- 100 g active starter
- 10 g salt
Reading the numbers
100% hydration starter
550 g total flour/grain, 400–425 g total water, 72.7–77.3% hydration, 1.82% salt
Continue reading
For quantities, use the hydration reference or arithmetic guides. For a complete cooking method, choose one of the published recipe references and follow its ingredients, equipment and process together.
Sources & scope
Source-based explanation and editorial checklists by SourdoughStart, operated by Tag Ad Limited. AI-assisted article revised 2026-10-12. Source links are not endorsements.
Revision note: prepared for the new reference-led edition. Suggest a correction.