Stainless steel itself will not promote the deterioration of liquor, because it has no chemical effect with liquor. The reason for liquor deterioration is that the wine container is not well sealed and the alcohol will continue to volatilize and deteriorate; the second is that the ambient temperature is high, and the alcohol will accelerate the volatilization. Therefore, the stainless steel jug for wine must be sealed well to prevent the alcohol from evaporating outward, and then the sealed jug should be stored in a cool environment. If possible, it is best to put it in the refrigerator for long-term storage.