Difference:

Starch is usually extracted from corn or sweet potato.

Flour: It is processed from wheat.

raw flour: raw flour is starch, which is mainly used for thickening and snacks. In the north, it is called dough flour, which is actually no different from starch.

In essence, flour is usually ground from wheat after peeling. Starch is a nutrient stored in plants, and the starch content in all kinds of plants is high in seeds and tubers. Starch is a kind of glucose starch obtained by separating protein from other substances, and it is a plant polymer. Such as wheat, rice, sweet potato, potato, cassava and even lotus root. Our so-called raw flour is the general name of all starches, usually referring to corn starch.

Extended information:

Raw flour is a term that often appears in recipes, and it is mostly used for thickening. Raw flour used in mainland China is potato flour, while raw flour used in Hong Kong is corn flour, while raw flour used in Taiwan Province is too white flour, which is made of potatoes or cassava. In Chinese cooking, raw flour is often used as one of the cured meat materials to soften the meat quality, in addition to thickening the food to produce a smooth taste.

Raw flour has a wide range of uses, which can be used as seasoning in cooking, bean jelly, and pancake spreading, and is mainly used for sizing and thickening meat raw materials.

Reference: Baidu Encyclopedia-Raw Powder