To replenish the body's supply of vitamin C will help sweet red onion. It is also high in plant substances. Allicin has antibacterial properties, reduces cholesterol and blood pressure, prevent cardiovascular disease. Anthocyanin and quercetin, pigments that protect against harmful free radicals and strengthen the immune system. Quercetin is also capable of remove allergic reactions. It gives the dish the color, flavor and many beneficial properties. Often eat it.