2. Because cold water can make sticky ingredients in rice gradually penetrate, if it is soaked in hot water, its temperature is too high, which will destroy effective ingredients such as protein in rice, reduce its nutritional value and make rice sour.

Generally speaking, it takes at least 5 hours to soak glutinous rice in cold water, and then it can be soaked for 1-2 hours. Glutinous rice is easier to cook after soaking. If we have enough time, we can soak glutinous rice at night and cook it the next day, which is more convenient.