Red onions are a type of onion known for their deep purple skin and white flesh tinged with red. They have a mild, sweet flavor compared to yellow or white onions, making them popular in salads, sandwiches, and salsas. Their vibrant color adds visual appeal to dishes. These onions are rich in antioxidants, particularly quercetin, which may offer health benefits such as reducing inflammation and supporting heart health. Red onions can be eaten raw or cooked, and they are often used in various cuisines around the world, enhancing both taste and nutrition.