The onion (Allium cepa) is a widely cultivated vegetable belonging to the genus Allium. Known for its pungent flavor and strong aroma, it is a staple ingredient in many cuisines around the world. Onions come in various types, such as red, yellow, and white, and can be eaten raw, cooked, pickled, or used as a seasoning. Besides their culinary uses, onions also have potential health benefits due to their rich content of vitamins, minerals, and antioxidants.