Remove the smell of beans. There are also thousands of paper pulp skins, 100 pages, bean curd skins, thousands of sheets and so on. Traditional bean products are as thin as paper. The reason why the louver is cooked is to remove the beany smell and save the frying time. Blanching is a cooking process, which means that the primary processed raw materials are put into a boiling water pot and heated to half-cooked or full-cooked, and then taken out for further cooking or seasoning.