Flour, also known as starch, is the general name of a variety of starch, flour can be made from corn, mung beans, potatoes, sweet potatoes in the starch. There are corn starch, green bean starch, potato starch, sweet potato starch, pea starch, etc., of which the corn starch can be used to make cold noodles, with a delicate and smooth taste.

Raw flour, also known as starch, is the general name of all kinds of starch, raw flour can be made from corn, mung beans, potatoes, sweet potatoes and refined starch. There are corn starch, mung bean starch, potato starch, sweet potato starch, pea starch, etc. Among them, corn starch can be used to make cold noodles with a delicate and smooth taste.