First, soak soybeans in water for 2 hours. After soaking, take out the prepared stone mill or juicer. Then put the beans in the hole of the stone mill. Finally, turn to a stone mill to grind the bean juice, and add appropriate amount of water in the process.
Tofu is a nutritious food with a long history. The public's love for tofu has promoted the progress and development of tofu making technology. The main production process of tofu is pulping, that is, soybean is made into soybean milk; The second is solidification, that is, soybean milk solidifies into a gel containing a lot of water under the joint action of heat and coagulant, that is, tofu.
The practice of PPL grinding bean curd:
1. Soak: Soak soybeans in water for three to four hours, and soak hard soybeans in soft foam.
2. Pulping: Put the soaked soybeans and water into a refiner (the old method is to put them into a stone mill), grind out fine soybean milk and pour it into a bucket.
3. Boiling: Put the ground soybean milk into a pot, boil it over high fire and put it into a bucket.
4. Mix lime water: pour a proper amount of gypsum into the basin and adjust it with a small amount of water.
5. Grouting: evenly pour the prepared limewater into the boiled limewater, pour it as slowly as possible, observe the state of limewater while pouring, and further slow down the pouring speed of limewater when the limewater gradually precipitates. When the tofu flower is gradually formed and stabilized, stop.
6. Pressurized molding: Use several slotted wooden boards with square board faces, pad a large piece of white cloth, pour the solidified tofu flower into the wooden board slot with a ladle, wrap it with the white cloth that has been padded in advance, put a thick wooden board on the white cloth, put a heavy object on the wooden board, squeeze out water, and slowly shape the tofu flower. After about 90 minutes, remove the weight and board, turn it upside down, remove the big white cloth, and the white and tender tofu is ready.
7. Molding: After about 90 minutes, remove the heavy objects and boards, turn them upside down, remove the big white cloth, and the white and tender tofu will be ready.