2. Soybean, also known as soybean, is a kind of food crop widely distributed all over the world, and the soybean milk we usually drink is made of it. Before making soybean milk, soybeans are often soaked in water. In daily life, soybeans are generally soaked in warm water. Usually, as long as soybeans are soaked in warm water for about 12 hours, they can be picked up and put into a soymilk machine, and a proper amount of water is added to drink soybean milk. But if the water temperature is too high, the skin of soybean will be broken and nutrition will be lost. Using warm water can maintain the nutrition of soybean to the greatest extent, and can also effectively soften the cellulose in it. Human intake can increase satiety and reduce irritation to gastrointestinal tract. It is recommended not to soak soybeans in overheated water or supercooled water in daily life. Soybeans are best soaked in warm water of about 40 degrees. If you want to speed up the soaking, regardless of the loss of nutrients, you can soak soybeans in hot water.