Corn flour is a type of flour milled from dried whole corn kernels. It's considered a whole grain flour because it contains the corn's hull, germ, and endosperm. Corn flour is usually yellow or white or blue, depending on the variety of corn used. The texture is fine and smooth, similar to whole wheat flour.
Like all flours, corn flour is often combined with a binder like eggs to provide shape and structure to baked goods and other food.