Caper buds are the unopened flower buds of the caper plant, scientifically known as Capparis spinosa. These small, green buds are typically harvested before they bloom and are known for their tangy flavor. They are often pickled in vinegar or brine, which enhances their taste and preserves them for culinary use. In cooking, caper buds are commonly used in Mediterranean dishes, adding a burst of flavor to sauces, salads, and seafood. They are a key ingredient in tapenade and can also be found in recipes for puttanesca sauce and various pasta dishes, providing a unique, salty kick.