What Is Sourdough Starter?
Sourdough starter is equal parts flour and water left to ferment over an extended period of time. You can make your own sourdough starter very easily at home! Simply mix 50 grams of all-purpose flour with 50 grams of warm water in a glass container with a tight fitting lid. Each day, discard about half of the mixture, and refresh the jar with 50 grams more each of flour and water.
Many people use different flours, such as whole wheat or rye to make their starters; however, all-purpose white flour is a good starting point. After about a week, you will begin to see bubbles on the surface of your starter. This is a good thing! It means your sourdough starter is active, and ready to use.
The Importance of a Scale
Baking sourdough is a precise process that doesn’t lend itself well to measuring cups. To ensure best results, use a kitchen scale that weighs ingredients by grams.
The active sourdough starter should look bubbly and slightly foamy at the surface.