How does cereal milling make grain easier to cook and eat?

Cereal milling is the process of grinding grain to break it down into smaller particles, which makes the raw grain easier to cook and transforms it into an appealing foodstuff.1

By reducing the grain to a more manageable form—such as flour, meal, or cracked pieces—milling increases the surface area of the material. This physical change allows for more efficient heat penetration during cooking, which is necessary because most raw cereal grains are not suitable for direct consumption. Depending on the specific grain and cultural preferences, milling may involve removing the outer bran and germ to isolate the endosperm, or processing the grain in ways that retain its components to create different textures and culinary applications.12