Onions are one of the most widely cultivated and consumed vegetables around the world. They belong to the Allium family, which also includes garlic, leeks, and shallots. Known for their pungent aroma and distinctive flavor, onions are a staple ingredient in many cuisines and are used both raw and cooked. They come in various types, including red, white, and yellow, each with its own taste and culinary use. Rich in antioxidants and compounds like quercetin, onions offer several health benefits, such as supporting heart health and boosting the immune system. In addition to their nutritional value, onions are valued for their versatility and long shelf life, making them an essential part of kitchens globally.