2. custard powder replaces cassava flour: The raw materials in custard powder are corn and wheat. After removing protein, methyl cellulose, human fat and other substances, only cassava starch is left, so this cassava starch can completely replace cassava flour.

3. Wheat flour instead of cassava flour: Wheat flour is also malleable when making dough, and can be used to make jiaozi and steamed bread skins.