Rice flour is naturally gluten free and can be used in so may recipes. I decided to make my own because I thought if I bought a full bag of it it would definitely go to waste. Also I had plenty of rice, I try to shop in bulk. One to save money and two to save the planet from single use waste pollution. Okay so that meant I had a large amount of rice at home but don’t worry you don’t need so much. I just needed enough for a quick recipe but you can make as much as you want the process is still the same either way. 1c dry rice can give you equal to 1 1/2 rice flour. You can use a high speed blender, large coffee grinder, Indian grinder etc.