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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.
Hicks says a half-full freezer can keep food safe for up to 24 hours, and a full freezer lasts up to 48 hours, as long as you keep the freezer door closed for the majority of the time. If food contains ice crystals or the temperature is below 40 degrees, you can safely refreeze it.