Pancake is one of the traditional foods in China, which is made by mixing flour and corn flour into paste and smearing it. Most of them are made of coarse grains, and some are made of fine flour. After baking into a cake, it has less water and is dry, and its shape is like cowhide. Can be thick or thin, easy to stack, rich in taste, and resistant to hunger after eating. Generally square, loose and porous. It is rectangular after folding, with rough texture and hunger resistance.