Oatmeal is made of oatmeal rolls, flat, with a diameter similar to that of soybeans and a complete shape. Oats can be shelled and ground into oatmeal with different thicknesses, or softened and flattened to make oatmeal rolls. The instant oatmeal processed by fast food has a sense of fragmentation, but it can still be seen in its original shape. Cooked oats are very sticky, which is brought by the healthy ingredients of β -glucan Its functions of lowering blood fat, lowering blood sugar and increasing satiety are closely related to this viscous substance. Generally speaking, the thicker the same amount of oats is cooked, the better the health care effect.