Cereal is a food product that is processed from wheat. It is made from regular wheat and a few things. It is a grain that comes from being cooked, crushed, and dried, and is usually eaten in milk and juice, or made into cereal. Cereal is also categorized into regular cereal and oatmeal, which is made from oats, due to the simple and time-saving process of making cereal foods. There are types of cereals that can be consumed as soon as they are soaked in water.

Oatmeal is rolled oat kernels, which are flat, about the diameter of a soybean grain, and complete in shape. Oats can be hulled and ground into oatmeal of varying thickness or softened and flattened into rolled oats. Instant oatmeal that has been processed is somewhat crumbly, but its original shape is still visible. Oats are cooked to a highly viscous consistency, which is brought about by the healthy content of beta glucan in it, and its hypolipidemic, hypoglycemic, and highly satiating effects are closely related to this viscous substance. Overall, the more viscous the same amount of oats cooked out, the better the health effects.