1. If the overnight porridge has been stored for a long time, all the water in it will be absorbed by the rice and it will become drier. If you want to heat it at this time, it is best to add some cold water to it and then cook it. If you add hot water directly, the porridge will be cooked by the hot water and the taste will not be good. However, if you add an appropriate amount of cold water, the taste will be more even after it is cooked.

2. However, when making overnight porridge, it is not recommended to put it in the pot directly over high heat. You can use a microwave oven or steam it with water, add an appropriate amount of cold water to the overnight porridge, and then heat it. Just work. Although it will take a little longer, the taste will be maintained.