Gluten-free flour is commonly considered in two ways: there are individual flours, such as rice and buckwheat (and that includes starches such as corn, potato, tapioca), and then there are blends. Blends are a mix of those singular flours in varying ratios, and for familiarity’s sake are usually labelled as either gluten-free plain, self-raising or bread flour. These blends are more versatile, and it’s the plain flours that we’ve got under the microscope today.