How long do capers last?
Unopened, they keep in the cupboard for about 2 years. Once opened, in the fridge for about 1 month.
This refers to: Jarred capers in brine.

Shelf life of capers at a glance
| Storage | Unopened | Opened |
|---|---|---|
| Cupboard | 2 years | – |
| Fridge | – | 1 month |
Refrigerate once opened and keep the capers covered with brine. Use a clean spoon and discard them if the brine turns cloudy.
Past its date does not mean spoiled
These are guide values for food stored correctly. A best-before date is not a throw-away date: many products are still fine after it. Check how it looks, smells and tastes. Mould, an unusual smell or a bulging can are reasons to throw it away. A use-by date is different: do not eat the food after it.