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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.
It can sit out at room temperature for about 10 hours without going bad. If you refrigerate it, it can last for up to 8 days, and if it's in the freezer, it can last for 3-6 months, depending on how often your freezer is left open. If the milk has already thawed, it can last for a full 24 hours in the fridge.