At room temperature, spring and autumn can be preserved for about one day, summer can only be preserved for the same day, and winter can be preserved for about two days.

If ordinary cake embryo refers to sponge cake or prestige cake, it is a cake without stuffing and cream. If this kind of cake is kept in the refrigerator, it can be kept for 2-3 days without deterioration, but it will taste worse if it is kept for too long. If stored at room temperature, the high temperature should not exceed 2 days and the low temperature should not exceed 3 days.

If it is whipped cream, it has less plasticity and lower melting point than cream and is easier to melt. If the cake you buy doesn't stay at room temperature for a long time, it will feel like melting, and it will contain more water in your mouth. That's real pure cream.

On the other hand, if the shape of the cake remains unchanged for a long time at room temperature and the entrance is not easy to melt, it is vegetable cream containing trans fatty acids. Therefore, the cake ordered by the store "must be put in the refrigerator and eaten within 2 hours" should be made of whipped cream.