The onion is an inevitable vegetable that is used in almost all cuisines, from Mexican, Indian to Chinese. This vegetable enhances the look and taste of every dish and can be found in every household. In commercial food outlets also, fresh onion is in high demand. It is not only good in taste but also has many nutritional facts as well. Red onion is considered to have a lot of antioxidants, carbohydrates, protein and fiber, along with high water content. It does not have any side effects and is absolutely safe for consumption by people of any age in any form, whether raw, fried, grilled or sautéed.