How many cups are in 100 grams of sourdough?

There is no definitive answer to this question as the cup measurement is not the most accurate way to measure sourdough. The accurate way to measure sourdough is by weight. The weight of 100 grams of sourdough will vary depending on the hydration level of the dough. A well hydrated sourdough dough, like ones made to bake in a loaf pan, will weigh close to 100 grams per cup. A low hydration dough, like a focaccia, may weigh closer to 70 grams per cup.