How long does kefir last?
Fridge
-
Freezer
Do not freeze
-
Pantry
No known time
-
Mine has been in the fridge for
Refreeze after thawing in the fridge?
- United States
- -
- United Kingdom
- -
Can you freeze kefir?
No, official sources advise against freezing it.
Can kefir be kept out of the fridge?
Official sources give no room-temperature (cupboard) storage time for kefir.
All forms at a glance
| Form | Fridge | Freezer | Pantry |
|---|---|---|---|
| Fermented milk | - | - | - |
| Fermented milk, opened | - | - | - |
Frequently asked questions
Can you freeze kefir?
No, official sources advise against freezing it.
Can kefir be kept out of the fridge?
Official sources give no room-temperature (cupboard) storage time for kefir.
Good to know
Other figures given by the sources for close variants:
- Kefir, fermented milk Fridge 1-2 days
Sources
We always show the most cautious time among official sources. Last checked: 1 October 2026.
- FoodSafety.gov Cold Food Storage Chart US
- Food Standards Agency - consumer food hygiene guidance GB
- USDA FSIS FoodKeeper data US
- USDA FSIS Safe Food Handling and Preparation US
Values we do not display (2)
Values below were set aside: unconfirmed by a second independent source, or contradicted by a shorter time.
- Fermented milk, fridge: 1 week (fsis.usda.gov, not confirmed by a second source)
- Fermented milk, opened, fridge: 1-2 days (fsis.usda.gov, not confirmed by a second source)