1. Raw material treatment. Take 5 kg of soybeans, shell them, screen them, wash them and soak them in a water tank for 4-5 hours in winter and 2.5-3 hours in summer. The soaking time must be well controlled, not too long, otherwise the pulp will fall off and the tofu will not be made.

250 grams of raw red gypsum (20-30 grams of gypsum for each kilogram of soybeans) are baked in the fire. This is a key process, and the roasting degree of gypsum must be mastered (break the gypsum with a hammer until it burns to the heart). Gypsum is too raw to use; Too ripe not only can't make tofu, but soybean milk also smells like rotten chicken shit.

2. Grind the beans and filter the pulp. Take out the soybeans after soaking, and grind them according to the ratio of adding 6 kilograms of water to each kilogram of soybeans. Put the ground slurry in a bag (made of tofu cloth), pinch the mouth of the bag and squeeze the soybean milk out hard. After the soybean milk is squeezed, you can open the bag, add 3 kilograms of water, stir well and continue to squeeze the milk. General 10 kg of bean dregs 15 kg, about 60 kg of soybean milk. Don't mix bean curd residue with soybean milk when squeezing pulp.

3. Boil the pulp. Pour the squeezed puree into a pot and boil it, without covering the lid, and skim off the foam on the surface while cooking. The fire should be strong, but not too strong, in case the soybean milk overflows after boiling. Boil soybean milk until the temperature reaches 90 ~ 1 10℃. Insufficient temperature or too long time will affect the quality of soybean milk.

Grind the burnt gypsum into powder, mix it with a bowl of clear water (about 0.5 kg) into gypsum slurry, pour it into the soybean milk that has just been scooped out of the pot, and gently stir it with a spoon. After a few minutes, the soybean milk condenses into tofu.

4. make tofu. In about 15 minutes, gently scoop the tofu flower into a wooden plate (or other container) covered with cloth with a spoon. When it is full, wrap the bean curd flower with cloth, cover it with wooden board, and press 10 ~ 20 minutes to get the water bean curd flower.

5. Make dried tofu. Spoon the bean curd flower into the wooden pallet, wrap it in cloth, cover it with wooden boards, pile up stones, and press it until it is full to make dried bean curd. General 10 kg soybean can make 25 kg dried bean curd.