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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.
1 Lower quality caviar is younger, with a less intensely fishy flavor, and darker in color. Itâs a good thing, too, for caviar newbies, who are more likely to start on the cheaper, milder stuff.  Caviar lasts more than a day. Because itâs technically cured fish, caviar has a decent shelf-life, even after itâs opened.