1. Generally speaking, it is recommended to buy it on the same day. If you can't finish it that day, it is recommended to keep it in the refrigerator. The packaging requirements are very strict, and you should use an incubator and an ice pack.

2. If the mousse cake is placed in the refrigerator, it can be stored for 3 to 7 days in cold storage and 10 days in frozen storage, but don't thaw it repeatedly.

3. When it is stored in cold storage, it should be sealed with a sealed box or plastic wrap to prevent the cake from drying out and prevent the odor of the refrigerator from infiltrating. When frozen, the original package can be directly stored in the refrigerator and taken out at room temperature 20 to 30 minutes before eating.