How to make old tofu?

The preparation method of old tofu is as follows:

[Ingredients] Soybean 1500g, 50g of glucose powder, and proper amount of edible oil.

【 Technology 】 Soak soybeans in cold water for 6 hours in summer and about 10 hour in winter, and wash them several times. Add 15 kg of water to each kg of beans and grind into soybean milk. Boil soybean milk in the pot, remove the bean foam with a little cooking oil, and then dilute it with boiling water. Put the glucose powder into another container and quickly pour the cooked soybean milk into the container. After stirring evenly, cover it and press 15 minutes.

[Features] White and soft, fragrant and delicious.