- How long do capers last once opened? The precise answer depends to a large extent on storage conditions - keep opened capers refrigerated and tightly covered.
How long do opened capers last in the refrigerator? Capers that have been continuously refrigerated will keep at best quality for about 1 year.
Are capers safe to use after the "expiration" date on the package? Yes, provided they have been stored properly, the package is undamaged, and there are no signs of spoilage (see below) - commercially capers will typically carry a "Best By," "Best if Used By," "Best Before", or "Best When Used By" date but this is not a safety date, it is the manufacturer's estimate of how long the capers will remain at peak quality.
How can you tell if opened capers are bad or spoiled? The best way is to smell and look at the capers: if the capers develop an off odor, flavor or appearance, or if mold appears, they should be discarded.
Discard all capers from bottles that are leaking, rusting, bulging or chipped.
Sources: For details about data sources used for food storage information, please click here