Red onion is a common element in many different cuisines throughout the world. It is distinguished by its vivid crimson or purple colour and unusual flavour. They give meals a hint of sweetness and moderate pungency, making them a flexible choice for both raw and cooked recipes. Red onions are frequently sliced or diced and used in salads, sandwiches, salsas, and as a burger and taco topper. Red onions, with their appealing colour and crisp texture, not only enhance the flavour but also offer aesthetic appeal to culinary creations.