Enriched with the goodness of essential vitamins like vitamin B and C, minerals like manganese, calcium, iron and potassium, and a myriad of antioxidants, onion powders hold high significance in treating a host of ailments including mouth sores, heart problems, headaches, high blood sugar and even cancer. They impart good flavour to stews, soups, tomato sauces or cooked vegetables - baked or stuffed. Include white onions to add crunch and flavor to dressings, relishes, or sauces. This onion is used in Mexican foods or complementing the flavors of other ingredients.