The specific process of grinding tofu

Tofu is made from soybeans. The whole process of making tofu is commonly known as grinding tofu, the Chao people are called "to be douguan", in fact, not only "to be" (grinding), but also through several processes, before becoming tofu, the traditional production process is as follows:

One is to grind pieces of shells. Dry soybeans in batches poured into an earth huller grinding, so that it is shelled and flake; two is soaked, so that the shelling clean soybean pieces in the water soaked four or five hours. Three is grinding soybean milk, with manpower to rotate a stone mill, accompanied by water will be ground into soybean milk, usually operated by two people, that is, one person with a huller arm constantly rotating the stone mill, one person is responsible for adding materials (soybeans and water). Fourthly, the slag is removed, and the soybean milk is filled with a dense flour bag, and then the slurry is squeezed out forcefully and flowed into a wooden barrel. Fifth, boiling, pure soybean paste into a large pot, after boiling into a proportion of gypsum water in a wooden barrel, and a wooden paddle to stir, and then let it cool and condense. Sixth, pressurized molding, take a few pieces of about 60 cm long and 60 cm wide and about 4 cm deep groove-shaped board (the board was square), and each padded with a piece of white cloth, and then use the shell ladle will have been coagulated bean curd flower scooped into a few pieces of board groove, with the groove of the white cloth to cover, and then pressed on a board and stone, so that it reduces the moisture content and shaping, an hour or so later, move away from the stone and the wooden board and reversed it, remove the white cloth! After an hour or so, the stone and board are removed and turned upside down, and the cloth is removed, and a slab of creamy-white, chevron-shaped tofu is freshly baked.