Exercise 1:
1, take a large amount of raw soybean powder, put it in a pot, and drain a small amount.
2. Stir the water and raw soybean powder evenly with a spoon.
3. Drain the water several times, heat it, stir it again, after boiling, turn on a small fire, drain the water, stir it and cook it for 3-4 times.
4. Pay attention to overflow when cooking soybean milk, and simmer for a while after boiling to avoid uncooked soybean powder, which is harmful.
Nutritional value:
1. Soybean contains about 40% protein, which is comparable to animal protein in quantity and quality. The protein content of 500g soybean is equivalent to1500g egg, or 6000g milk, or1000g lean pork, so soybean has the reputation of "vegetable meat" and "green cow".
2. Soybean protein contains more essential amino acids, especially lysine, which just supplements the shortage of lysine in cereals, and methionine lacking in soybeans can be supplemented by cereals.
3. The fat content of soybean is 18-20%, ranking first among beans, and the oil yield reaches 20%. In addition, it is superior to animal fat in that it contains less cholesterol, but is rich in linseed oleic acid and linseed oil dilute acid. These unsaturated fatty acids make soybeans have the function of lowering cholesterol. Lecithin is also more, which is of great significance to the development of the nervous system.