The onion is a vegetable that is nearly a must-have in Indian cuisine. This is also one of the most important elements in raw salads. They come in a variety of colours, including white, red, and yellow, and are popular in cold salads and hot soups. You may use it in burgers and sandwiches by dicing, slicing, or cutting it into rings. When onions are cooked, they release a strong flavour and smell due to the sulphur compound in the vegetable. Onions are recognised for their high biotin content. The majority of the anti-oxidants, flavonoids, are located in the outer layers, thus peeling off the layers should be done as little as possible.