Onions are inevitable In the Kitchen, Its presence lends color, enchantment and texture to a wide variety of dishes and cuisines. But, their appeal goes beyond flavor when you consider their role in cooking and our health as well. Onions add abundant flavor to wide variety of food, yet are low in calories. They are naturally fat & cholesterol free. They are a source of dietary fiber, Vitamin C, Vitamin B6, potassium and other key nutrients including folate, calcium and iron.