We offer capers add bold and vibrant flavor to your meals -- the small, pickled flower buds contain mustard oil, so even a few capers impart big taste. Cooking with capers adds interest to your meal without adding a lot of calories -- each tablespoon contains just two calories. Capers provides some health benefits due to their modest nutrient content, which helps you reach your recommended daily intake of a few essential nutrients. However, due to their high salt content, you should consume them in moderation.