The key idea

Starter contributes flour and water even when a short tortilla method does not rely on a long rise. This makes its hydration relevant to the dough’s arithmetic.

What to compare

Distinguish using starter for flavor from fermenting a dough to a specified endpoint. Oil and butter are not identical ingredients. A tortilla containing wheat starter contains gluten, regardless of whether the starter is active or discard.

Quantities in this example

  • 240 g / 1 cup 100%-hydration starter or discard
  • 190 g / 1 1/2 cups all-purpose flour
  • 2 tbsp neutral oil or melted butter
  • 1/2 tsp fine sea salt
  • 1–2 tbsp warm water

Reading the numbers

240 g starter at 100% hydration

310 g total flour and 135–150 g total water, 43.5–48.4% hydration before fat

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

  • Arithmetic examples or editorial planning checklists; no empirical fermentation prediction is made.

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.

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