Note: Here is the recipe for My Favorite Homemade Gluten-free Flour Blend: 4 c. brown rice flour (520 g.); ⅔ c. tapioca flour (84 g.); 1 c. arrowroot flour (120 g.); 2 tsp. xantham gum (7 g.) Or you can use store bought such as Bob's Red Mill 1 to 1 Gluten Free Baking Flour.