Capers are tiny, unopened buds of a flowering bush that grows in Mediterranean regions. They give a piquant little bite to sauces or salads and are often used as garnish for fish or meat. To release their flavor in sauces, coarsely chop capers before using.
Bottled capers packed in vinegar will keep for months in the refrigerator. Drain off the liquid before using. If you prefer a less salty taste, rinse and drain capers before using. Salt-packed capers stored in glass or ceramic containers will keep for several months at room temperature. Rinse and drain before using. -- Cole's Cooking A to Z