The practice of tofu soup in the north needs to do these steps well.

1, make a bean paddle: I suggest you buy a bean paddle machine. Soak dried soybeans for 3-4 hours (summer) and 7-8 hours in winter. After the soybeans are soaked, put them into the soymilk machine. According to the actual operation instructions of the equipment, hot bean paddles can be made quickly.

2. Paste: Boil a proper amount of plaster of Paris or lactone with a small amount of water (the adhesive can be purchased, and the dosage on the package indicates that the dosage of joint sealant is generally three thousandths to five thousandths of the amount of soybean meal, and the dosage of lactone is one thousandth to two thousandths). Put the cooked soybean meal into a container filled with old tofu, and the cooked soybean milk is rushed in while it is hot (it takes 85 degrees Celsius to make tofu and 95 degrees Celsius to make cooked gypsum old tofu).

3, dunnao: After pasting, cover the vessel and let it stand for 5- 10 minutes, which is a delicate and refreshing old tofu.

4, seasoning: North tofu brain will have a slight strange smell, and the old tofu made of plaster of Paris is a bit astringent. You can season according to your own habits.