Caviar should always be served chilled and must be kept refrigerated at all times.
For best results please store the caviar in the coldest part of your fridge which is usually the bottom shelf.
Unopened the tin will last several weeks if properly refrigerated, please check the use by date, which you will see on the bottom of the tin.
Once opened if you don't eat the caviar in one go (and usually it is so good that you will!) please seal the tin firmly and eat within 2 days.