Sour Flour Hotline

Sour Flour is dedicated to helping people learn to understand how to bake bread. We always encourage questions, either by email, or through the Sour Flour Hotline. Give us a call at (415) 509 – 3380 if you are not sure what is happening with your starter, want to improve your loaf, learn bakers math, or have any other questions relating to baking bread.