Capers are the unopened flower buds of the caper bush, a plant native to the Mediterranean region. They are typically pickled in salt or brine and used as a condiment or garnish. Capers have a unique, slightly salty and tangy flavor that can add a burst of umami to dishes. They are often used in salads, pasta dishes, and sauces.
When buying capers, it is important to look for those that are firm and green. Avoid capers that are brown or have any signs of bruising. The size of the capers will vary depending on the variety, but smaller capers are generally considered to be more flavorful. Capers can be found in most grocery stores, either in the vinegar aisle or in the international section.