◆ Last updated: ◆ By LeDiamont — Zervan GmbH
Cold, sealed, and eaten soon after opening
Unopened, fresh caviar keeps from a few weeks up to about three months in the fridge, depending on the producer: the use-by date and storage instructions on the tin are the reference. Once opened, enjoy it within 48 hours, and never beyond the period stated on the label. Keep it in the coldest part of the fridge, just above freezing (about −3 °C to +3 °C, as specified on the label). Freezing is not recommended for fresh caviar, and opened caviar should never be frozen.
Key takeaways
- ◆Cold is everything. Caviar keeps best just above freezing, colder than most home fridges are set.
- ◆The label rules. Shelf life varies by producer, salt level and packaging, and even between the caviars in our own range.
- ◆Opening starts the clock. Air and warmth begin to change the pearls within hours.
- ◆Freezing damages texture. It is a last resort, for sealed tins only.
- ◆When in doubt, throw it out. Spoiled fish roe is a food-safety risk.
Contents
How long does caviar last? At a glance
| Situation | How long it keeps | Notes |
|---|---|---|
| Unopened, fresh (malossol), fridge at about −3 to +3 °C | A few weeks to about 3 months | Follow the use-by date and the temperature on the label |
| Unopened, standard fridge at 4–5 °C | Shorter than the label suggests | Use the ice-pack method below to bring the temperature down |
| Opened, covered, in the fridge | Best within 48 hours | Never beyond the period stated on the label |
| Tin on a bed of ice during service | The length of the meal | Serve small quantities; keep the reserve in the fridge |
| At room temperature, off ice | About 30 minutes for best quality; no more than 2 hours | 1 hour if the room is above 32 °C (90 °F) |
| Unopened, frozen (only if the label allows) | Several months | Texture suffers; thaw slowly in the fridge |
| Opened, frozen | Not recommended | Pearls turn soft and oily |
| Pasteurised caviar, unopened | Much longer (see label) | Once opened, treat it like fresh caviar |
The right temperature for caviar
Fresh caviar keeps best just above its freezing point. Because of its salt content, caviar does not freeze solid at 0 °C, which is why producers specify storage below zero. Our own product pages give, for example, −3 °C to +3 °C for Iranian Beluga AA® Caviar and −2 °C to +2 °C for Iranian Baeri Caviar.
The difficulty: food-safety authorities recommend keeping a fridge at or below 4 °C (40 °F), and many home fridges sit close to that limit, with the door and top shelves warmer still. That is fine for milk, but a little warm for caviar.
How to make your fridge cold enough for caviar
- 1Find the coldest spot: usually the back of the bottom shelf, or the fish or meat drawer.
- 2Use an ice pack or a bowl of ice: place the sealed tin on a frozen ice pack, or nest it in a small bowl of ice, inside the fridge. Replace the ice pack or ice daily.
- 3Check with a fridge thermometer: it costs a few francs and is worth it if you buy caviar regularly.
- 4Avoid the door, where the temperature changes every time the fridge is opened.
- 5Keep it away from strong-smelling foods, a good habit for any opened tin.
How long does unopened caviar last?
There is no single answer, because shelf life depends on how the caviar was made:
- ◆Salt level: malossol (“little salt”) caviar is lightly salted and more perishable than traditionally salted caviar.
- ◆Packaging: a tin sealed by the producer keeps longer than caviar that has been opened and repacked.
- ◆Producer and process: each producer sets its own use-by date.
- ◆Temperature: every degree warmer shortens the life of the caviar.
That is why published figures range from about four weeks to several months. Always rely on the date and instructions on your tin. For example, our Beluga page states up to three months unopened at −3 °C to +3 °C; for Ossetra and Sevruga, follow the temperature and use-by date printed on the label.
How long does caviar last after opening?
Once a tin is opened, air and warmth start to affect the caviar: the pearls slowly soften, release oil and lose their clean flavour.
- ◆Best quality: within 48 hours.
- ◆Maximum: the period stated on the label, kept cold and covered. Our product pages give 48 hours for Baeri and 3 days for Beluga.
- ◆After a long service: caviar that has spent a long time out of the fridge is best finished the same day.
How to store an opened tin of caviar
- 1Serve from the top with a clean spoon in mother-of-pearl, glass or porcelain (food-grade stainless steel also works; avoid silver), so the rest of the tin stays untouched.
- 2Press plastic film directly onto the surface of the caviar to remove air.
- 3Put the lid back on firmly.
- 4Return the tin to the coldest part of the fridge straight away, on an ice pack if possible.
- 5Don’t return leftovers to the tin from a plate or a guest’s spoon.
- 6Note the date and time you opened it.
Can you freeze caviar?
Fresh caviar: only as a last resort, only if the tin is still sealed, and only if the label does not advise against it.
Freezing turns the water inside each egg into ice crystals that damage its delicate membrane. After thawing, the pearls are softer, release more oil and lose much of their “pop” and flavour. Caviar that was handled correctly is still edible, but it is no longer the same caviar.
If you must freeze a sealed tin:
- ◆Freeze it early, not near the end of its shelf life.
- ◆Thaw it slowly in the fridge for about 24 hours, not at room temperature or in water.
- ◆Eat it soon after thawing and never refreeze it.
- ◆Use it in dishes (scrambled eggs, pasta, potatoes) rather than for a pure tasting.
Opened caviar should not be frozen: the texture collapses and the risk of spoilage rises. Pasteurised caviar is a different product, gently heated in its sealed jar for a longer shelf life; it does not need freezing, so follow its label.
How to tell if caviar has gone bad
Fresh caviar should smell clean and lightly of the sea and taste buttery and briny. Discard it if you notice any of the following:
- ◆A strong fishy, sour or ammonia-like smell.
- ◆A bitter, sour or metallic taste.
- ◆Mushy, slimy or burst pearls, or a lot of cloudy liquid.
- ◆A layer of oil collecting on the surface, a sign of age or warmth.
- ◆Mould or unusual discolouration.
- ◆A bulging or swollen lid on a sealed tin: a possible sign of bacterial growth. Do not open or taste it.
- ◆More than 2 hours out of the fridge (1 hour in a room above 32 °C).
When in doubt, throw it out. The cost of a tin is never worth the risk of food poisoning.
When your caviar arrives
Fresh caviar travels chilled. What you do in the first minutes matters:
- 1Open the parcel straight away rather than leaving it in the hall.
- 2Check that the cooling elements are still cold and the tin feels cold.
- 3Take the tin out of the outer packaging and put it straight into the coldest part of the fridge.
- 4If the parcel arrived warm (cooling elements fully melted, tin at room temperature), don’t eat it: contact our team right away, with photos.
- 5Note the use-by date and plan when you will serve it.
For delivery options to your address, contact our team before ordering.
Taking caviar to a party or travelling with it
- ◆Use an insulated cooler bag with frozen ice packs above and below the sealed tin.
- ◆Keep the trip short: a few hours at most, out of the sun and away from the car heater.
- ◆Refrigerate on arrival, then serve the tin on a bed of ice, with no direct contact between the pearls and the ice.
- ◆Open the tin only when you are ready to serve.
Tips to get the most out of every tin
- ◆Buy the right size. A tin finished in one sitting is always fresher than leftovers. Plan about 30 g per person for a tasting and see our guide to how much caviar per person.
- ◆Open it at the last moment and serve small quantities at a time, keeping the reserve in the fridge: see how to serve caviar.
- ◆Use leftovers quickly on scrambled eggs, a baked potato with crème fraîche or buttered pasta. More ideas in what to serve with caviar.
- ◆Planning a gift? A sealed tin can be given ahead of the occasion, as long as the recipient refrigerates it straight away and it is enjoyed before the use-by date. See our Caviar Gift Guide.
Read also: our complete guide to Iranian caviar, its history, its varieties and how to buy it in Switzerland.
Frequently asked questions
How long does caviar last in the fridge?
Unopened, from a few weeks up to about three months depending on the producer: follow the use-by date on the tin. Opened, it is best within 48 hours, and never beyond the period stated on the label.
How long does caviar last after opening?
Ideally 48 hours, kept covered with plastic film in the coldest part of the fridge. Never keep it beyond the period stated on the label.
What temperature should caviar be stored at?
Just above freezing, about −3 °C to +3 °C, as stated on the label. Most home fridges are warmer, so place the sealed tin on an ice pack in the coldest part of the fridge.
Can you freeze caviar?
Only sealed tins, and only as a last resort if the label does not advise against it. Freezing damages the texture. Opened caviar should not be frozen, and thawed caviar should never be refrozen.
How can you tell if caviar has gone bad?
A strong fishy or sour smell, a bitter taste, mushy or slimy pearls, oil on the surface, mould, or a bulging lid. When in doubt, throw it out.
Can caviar be left out of the fridge?
Only during service, with the tin on a bed of ice. Off ice, aim for no more than about 30 minutes, and never more than 2 hours (1 hour in a room above 32 °C).
Does unopened caviar expire?
Yes. Fresh caviar is a perishable product with a use-by date. Pasteurised caviar keeps much longer, but it also has an expiry date.
Can I eat caviar after the use-by date?
It is not recommended. Caviar is perishable, and after the use-by date the producer no longer guarantees its quality or safety.
Enjoy it fresh
The best way to make caviar last is to buy the right amount and serve it at its peak. Each product page lists the available tin sizes, from 30 g, and the storage instructions for that caviar.
Sources
- US Food and Drug Administration (FDA): Are You Storing Food Safely? (fridge at or below 4 °C, thermometers, 2-hour rule, damaged or swollen cans)
- LeDiamont: Iranian Beluga AA® Caviar: storage and shelf life (consulted 17 October 2026)
- LeDiamont: Iranian Baeri Caviar: storage and opened-tin guidance (consulted 17 October 2026)
- LeDiamont: Iranian Ossetra Caviar: storage guidance (consulted 17 October 2026)