Rice flour is a gluten-free, finely ground powder made from finely milled rice. There are two main varieties of rice flour. White rice flour is used to make pasta, puddings and baked goods. Brown rice flour is used to make bread, cake and other foods. Brown rice flour is gluten-free and is used to make gluten-free bread. Brown rice flour is darker, more nutritious and has a nuttier flavor than white rice flour.