You can use white onion in a wide variety of recipes, ranging from soups and sauces to main dishes and salads. It is also often used as a garnish to give a final touch to a dish. In addition to its culinary flavor and versatility, white onion is also an excellent source of nutrients. It is rich in vitamins and minerals, in particular vitamin C, potassium and iron. It also contains phytochemical compounds which can have beneficial health effects, such as reducing the risk of certain chronic diseases.