Mom paste is a unique Han snack in Luyi County, Henan Province, Laozi's hometown. Soak local soybeans and millet to make them swell, grind them into foam, and take the juice to cook. White as milk, fine without residue, smooth as fat, sweet and refreshing, and not sub-milky, hence the name Ma (commonly known as milk) cream. Serve with salted soybeans. After drinking the bowl, it is as clean as washing, and it is the top grade. If it is not clean, there must be corn mixed in, which tastes bad. Rice soybean milk is cooked until it is 78% mature, and it is not good to drink if it is not cooked. It's difficult to drink simply like this, so you should put a proper amount of yellow bean in the process of making the mother paste. This should have a good proportion, and if it is slightly asymmetrical, it will not taste so good. Put them together, stir them evenly, and heat them on a clay pot to cook. Then put some salted soybeans and sesame salt in the process of eating, and the taste will be better.