Fried sweet potatoes with raw flour is good. Raw flour has a gelatinizing effect, when cooking food, pour a little can lock the nutrients as well as make the flavor better, while the raw flour itself contains protein, it can not lock the nutrition of other foods. Therefore, you should use raw flour to fry sweet potatoes.

Raw flour is a common term used in recipes, mostly for thickening the sauce. In mainland China, raw flour is potato flour, in Hong Kong, raw flour is cornstarch, and in Taiwan, the usual thickening powder is tai bai powder, which is made from potatoes or cassava.

Flour is used in Chinese cooking not only to thicken food and give it a smooth texture, but also as a marinade to soften meat. Vermicelli has a wide range of uses, it can be used as a seasoning in stir-fry, as a cold noodle, as a pancake, and most of all, it is used to thicken and glaze meat ingredients.