Gluten-Free Sourdough Starter (2024)

Bake Mode

Prevent your screen from going dark as you follow along.

1. Day 1: Mix together the flour and water in a medium-sized bowl, stirring until thoroughly combined. Cover the bowl, and let the mixture rest overnight at room temperature.

2. Day 2: Discard half the starter, and feed the remainder with 1/2 cup + 1 tablespoon (128g) cool water and 1 cup (121g) Measure for Measure flour.

3. Days 3, 4, 5... Repeat the process from Day 2. Sometime between days 5 and 10, you'll notice that within several hours after feeding the starter will have grown in size to between 2 1/4 and 2 3/4 cups. At this point it's ready to use in your recipe. If it takes longer than this, simply keep repeating the once-a-day feeding process until it matures fully; bubbling nicely, and doubling in size within several hours after feeding.

Tips from our Bakers

• Be aware: some of your baking ingredients can be a hidden source of gluten. Learn more at our blog post: For gluten-free baking, think beyond just flour. For additional information on King Arthur-produced products, read the complete details of ourallergen program, including our contact-prevention practices.

• For tangier yeast bread recipes, try using 1 cup starter in place of 1/2 cup water and 1 cup flour.

• For a fun experiment, try substituting 1/2 cup starter for 1/2 cup of the flour and 2 ounces (1/4 cup) of the liquid in our Gluten-Free Blueberry Muffin recipe or any other muffin, cake or quick bread of your choice.

• Sourdough starter is best stored in the fridge in a stoneware crock or glass container with a loose-fitting lid. You should observe the same procedures for care and maintenance as for a wheat-based starter.

• Try this starter in our Gluten-Free Sourdough Flatbread and our Gluten-Free Sourdough English Muffins.