What is a "purple onion"?

Purple onion, also known as red onion, is a type of onion with purplish-red skin and white flesh tinged with purple. It has a mild to moderately strong flavor and a slightly sweet taste. Purple onions are commonly used raw in salads, sandwiches, and salsas, where their vibrant color adds visual appeal. They can also be cooked and used in various dishes, including soups, stews, and stir-fries, where they impart a subtle onion flavor and rich color. Additionally, purple onions can be pickled to enhance their flavor and preserve them for longer storage.