Onions are a widely cultivated vegetable known for their pungent flavor and versatility in cooking. Belonging to the Allium genus, which also includes garlic and leeks, onions are grown in many parts of the world and come in various types, such as red, white, and yellow. They can be eaten raw, sautéed, grilled, or caramelized, adding depth and aroma to countless dishes. In addition to their culinary uses, onions have been valued for their potential health benefits, including their antioxidant and anti-inflammatory properties. Rich in vitamins C and B6, as well as folate and potassium, onions contribute to a healthy diet. Their sulfur-containing compounds, which are responsible for their strong smell and taste, are also thought to support heart health and immune function.