Fermentation types / Sourdough

Sourdough

A flour-and-water culture that brings rise and flavour to bread.

Flour + water โ†’ starter โ†’ dough โ†’ baked bread

A scored loaf, a cut slice and a jar of sourdough starter

A sourdough starter is a community of yeasts and bacteria maintained with flour and water. Yeasts help dough rise, while fermentation develops acidity and flavour. University of Minnesota Extension: Building community with sourdough

The starter is an ingredient, not the finished food. Flour is raw: do not taste uncooked starter, dough or batter. University of Minnesota Extension: Is flour a food safety concern?

Do you enjoy baking regularly?

A starter comes with a feeding routine. Choose a bread project when that routine fits the way you cook.

Sources

Sources checked 11 September 2026.