[header] How to make an all purpose gluten free flour [title] Pour 6 cups (720 g) of brown rice flour into a large bowl. [step] Brown rice flour is a whole-grain flour, which is less processed than other types of flour. [substeps] You can find rice flour in the baking aisle of most health food stores or large supermarkets. 
If you are looking to save money, opt for white rice flour. You can find it for a low price at ethnic grocery stores.