Once opened, Caviar (fresh, in jar) keeps about 2 days in the fridge. Unopened, it keeps about 1–4 weeks.
2 days opened in the fridge, against 1–4 weeks sealed in the fridge. Green is what this situation leaves you; husk is what it spends.
| Situation | Keeps for |
|---|---|
| Unopened · fridge | 1–4 weeks |
| Opened · fridge | 2 days |
| Freezer | Not recommended |
Air and warmth are what shorten an opened item's life — the right container buys back the days the packaging gives up once the seal's broken.
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About 2 days refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.
Yes — keep Caviar (fresh, in jar) at 40°F (4°C) or below once it's open. Refrigerate at 40°F (4°C) or below.
Look for: A strong fishy, sour, or ammonia smell; A slimy film, or dull sunken eyes on whole fish; Flesh that doesn't spring back when pressed; Discoloration or darkening at the edges. Those are the general signs for seafood — USDA FoodKeeper v128 publishes no spoilage note for Caviar (fresh, in jar) specifically. Never taste something to test it — when in doubt, throw it out.
USDA FoodKeeper v128 does not recommend freezing Caviar (fresh, in jar) — it survives but the texture or quality suffers badly.