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Caviar Storage Caviar Storage Some caviar can be stored frozen for up to a year, and some others really should never be frozen at all, but should only be kept refrigerated. Caviar should be consumed on the same day that the tin is opened.
Caviar is usually heavily salted and is quite preserved, so may last for a few weeks, however, once open and air gets to it, it loses its flavor. Just as an FYI, freezing caviar is the worst thing you can do.