I don't know which model I bought. There is a soymilk machine at home, and I know best: this ratio is calculated by weight. If the maximum capacity is 1300ML, you have to do 1300ML, and 1300ML is about 1300mg. Then according to this ratio, it is probably dried soybeans: rice: chestnut: water = 75:16: 27:1182g; Generally, you use a matching small plastic cup (called a measuring cup), measure 1 flat cup of dried soybeans: 1/5 cups of rice: 3 chestnuts (crushed to the size of peanuts), wash them, put them in the cup, and then add water directly to the graduation line!