Corn flour is a fine powder made by grinding dried corn kernels (maize). Corn flour is naturally gluten-free, which means baked goods featuring corn flour won't produce the same rise as those made with wheat flour, but they will be tender and full of corn flavor.
How Is Corn Flour Made?
Corn flour is made from finely ground corn kernels. Most corn flour is made from dried yellow dent corn, a variety with a small dent in the top of the kernel. Millers remove the tough outer hull and nutritious germ from whole corn kernels, then use metal rollers to grind the kernels into a fine powder. Stone-ground, whole-grain corn flour is rarer. It contains more nutrients and fiber, but it has a shorter shelf life.