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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.
For that reason, as long as you keep the door(s) closed, a chest-style deep freezer will keep foods frozen for up to 72 hours without power. Thankfully, our outage was over by 1 a.m., so it only lasted for seven hours. Our refrigerator suffered the only losses of the night.