According to different storage environment temperatures. Sealed storage at room temperature of about 20 degrees can last for about 24 hours. Sealed storage at a temperature higher than 28℃ should not exceed 12 hours. If possible, the egg tart liquid should be sealed in the refrigerator, which can prolong the eating time by about 3 days. If you want to keep the egg tart liquid for a long time, you need to put it in the freezer, which can be kept for about 1 month, but the taste will be greatly reduced after eating it.