Red onions are a type of onion known for their deep purple-red skin and white flesh tinged with red. They are often used in salads, sandwiches, and salsas due to their mild flavor and vibrant color. Red onions can be eaten raw or cooked, and they tend to have a slightly sweeter taste compared to yellow or white onions. These onions are rich in antioxidants, particularly quercetin, which may offer health benefits. They are also a good source of vitamins C and B6, as well as minerals like potassium. Red onions can be found in grocery stores year-round and are a popular choice for adding flavor and color to various dishes.