Capers are the small buds of a Mediterranean bush, generally pickled in brine and used whole as a piquant flavoring or garnish. The tiny variety called nonpareil is considered the finest. Capers are often rinsed before using to remove excess salt. Most markets stock capers in jars with other condiments; store opened jars in the refrigerator. Capers are also available preserved in salt, which should be rinsed off before using.