It is very cold in winter. If the indoor temperature is low, porridge stored indoors overnight or frozen outdoors will not deteriorate or become moldy, and can be eaten frequently. However, even if the temperature is low in winter, if heating equipment such as air conditioner is turned on indoors, the indoor temperature will be higher, and the cooked porridge will be stored at room temperature for one night, especially in a poorly ventilated environment, which will lead to mildew and deterioration. If the porridge is moldy and spoiled, it can't be eaten.

China porridge culture

In the recorded history of China, the traces of porridge have always been with us. The writing about porridge was first seen in Zhou Shu: The Yellow Emperor began to cook cereal for porridge. In the Middle Ages, the function of porridge was to highly integrate "edible" and "medicinal" and enter the level of "health preservation" with humanistic color.

Su Dongpo wrote in the Song Dynasty: The night is very hungry, Wu advised rice porridge to eat, and the cloud can push Chen's heart. Porridge is fast and beautiful, and it's wonderful to sleep after eating porridge. Lu You, a famous poet in the Southern Song Dynasty, also strongly recommended eating porridge for health. He once wrote a poem "porridge": "Everyone in the world is older than others, but I didn't realize that at present I want to learn from the people and only eat porridge from the gods." As a result, the world's understanding of porridge has risen to a new height.