Onions are a widely cultivated vegetable known for their pungent aroma and distinct flavor, making them a staple ingredient in many cuisines worldwide. They belong to the Allium family, which also includes garlic, leeks, and chives. Available in various types such as red, yellow, and white, onions can be consumed raw, cooked, or pickled, adding depth to dishes. They are rich in antioxidants, vitamins, and minerals, offering numerous health benefits, including improved heart health and immune support. Onions also contain sulfur compounds that contribute to their characteristic smell and potential medicinal properties. Easy to store and versatile in use, onions remain an essential ingredient in households and food industries across the globe.