Sushi is usually stored in cold storage. Put it in a sealed plastic box, and then put it in the refrigerator for freezing or cold storage. When eating, take it out and let it stand at room temperature. Generally, sushi can be stored in a refrigerator for about 2 ~ 3 days, because the temperature of refrigeration is generally between ℃ and 5℃. If the temperature is between 5℃ and 1℃, the storage time of sushi will be shortened to one day, and there will be a risk of deterioration.