1. Choose an appropriate amount of soybeans and soak them for 3 to 5 hours, and soak them thoroughly. All the soybeans have softened.
2. Grind soybean into soybean milk and pour it into a large pot to boil. When cooking, control the temperature and keep stirring to prevent the pot from burning.
3. Let it stand for a while, and then add a little gypsum when the soybean milk is cold.
4. Spread the tofu into sheets with clean gauze.
5. Squeeze out the bean curd skin with water and wait for cooling.