Capers – Properties and Uses. Why You Should Include Them in Your Diet

Capers represent the unopened floral buds of the *Capparis spinosa* L. plant—commonly referred to as the caper bush—which are traditionally preserved through brining in vinegar or salt solutions, or alternatively dried for long-term storage. While their primary contemporary role lies in serving as a pungent, flavor-enhancing ingredient in Mediterranean cuisine, historical records indicate their extensive use in folk medicine across diverse cultures as a multifunctional therapeutic agent. Chemically, their composition is dominated by water (approximately 83%), supplemented by an array of essential minerals—including magnesium, calcium, and potassium—as well as fat-soluble vitamins (predominantly provitamin A) and water-soluble vitamins (chiefly ascorbic acid). Of particular scientific interest are the bioactive polyphenols present in capers, such as flavonoids and phenolic acids, which exhibit documented antioxidant properties. From a nutritional standpoint, capers are distinguished by their exceptionally low caloric density, with a 100-gram serving providing merely 23–36 kilocalories, thereby positioning them as a favorable component in low-calorie dietary regimens.

For centuries, capers have been esteemed in both folk medicine and contemporary scientific research owing to their multifaceted health-promoting properties. Historical records confirm their reputation as a natural aphrodisiac, as well as a diuretic agent facilitating fluid elimination and an expectorant aiding bronchial secretion clearance. Emerging evidence suggests that their bioactive compounds may alleviate rheumatic symptoms, enhance gastrointestinal function, and support hepatic detoxification processes. Furthermore, they demonstrate the capacity to mitigate bloating, stimulate protective mucus production within the digestive tract, and accelerate lipolysis—the breakdown of adipose tissue. The polyphenols present in capers exhibit potent antioxidant activity, which correlates with potential anticancer effects and a deceleration of cellular aging mechanisms. Additionally, they fortify vascular endothelial integrity, improve the bioavailability of essential micronutrients, and inhibit the oxidation of ascorbic acid, thereby prolonging its physiological efficacy. A particularly intriguing classification positions capers among *SIRT-activating foods*—a category that includes soy, green tea, turmeric, cruciferous vegetables, berries, parsley, chili peppers, and walnuts—all of which stimulate sirtuin proteins. These regulatory proteins modulate metabolic pathways, facilitate weight loss, and counteract the adverse consequences of poor dietary habits.

Owing to their intense and distinctive flavor profile, capers serve as an exceptional culinary enhancement, imparting depth and a signature pungency to a wide array of dishes. They are particularly prized as a refining component in classic preparations such as beef or fish tartare, salads featuring meats and cold cuts, and marinated fish or vegetable dishes. Their versatility extends to gelatine-based dishes, where they fulfill both a gustatory and ornamental function with equal aptitude. Within Mediterranean cuisine, capers assume a pivotal role, frequently incorporated into poultry, seafood, pizza, pasta, tomato-based sauces, and an assortment of salads. Moreover, they constitute an indispensable ingredient in the traditional French remoulade sauce, where their inclusion ensures a balanced and harmonious flavor composition. Given their elevated sodium content—which may adversely affect cardiovascular health—moderation in their use is advised. It is equally critical to avoid subjecting them to thermal processing methods such as boiling, stewing, or frying, as exposure to high temperatures compromises their unique taste attributes. When preparing hot dishes, capers should be added only at the final stage of cooking to preserve their aromatic integrity. In summary, capers merit a permanent place in dietary regimens not solely due to their low caloric density and nutrient richness but also because of their therapeutic properties, including anti-inflammatory effects and digestive support. Their unmistakable flavor further serves as an elegant enhancement to conventional dishes, introducing a sophisticated piquancy. Undoubtedly, they represent a foodstuff worthy of consideration when designing a diversified and health-conscious menu.