1, caviar has strict preservation standards. In order to retain its delicious taste to the greatest extent, caviar needs to be stored in a constant temperature and humidity environment of zero to MINUS 3 degrees Celsius and humidity of 50% to 80%, and it needs to be sterilized at low temperature to provide a longer refrigeration time. The unopened caviar can be stored at -2 ~ 4℃ for 18 months, and it can only be stored in the refrigerator for 6 ~ 8 weeks.

2. Caviar can't be kept for too long, because if it is kept for too long, the fish fat content in caviar will increase relatively and the salt content will decrease relatively, so caviar will go bad very easily. Therefore, when we eat caviar, we should try to finish it all at once. If you can't finish it, you can only keep it in the refrigerator for two days at most.