The poor sweet potato. It's not pretty so it's often overlooked as the nutritional powerhouse that it is. Sweet potatoes are not only one of our favorite foods, dogs love them, kids love them, and they are the secret weapon of those in pursuit of weight loss without deprivation. Sure they're strangely misshapen, but are packed full of vitamin A, vitamin C, manganese, copper, pantothenic acid and vitamin B6. They are a good source of potassium (which can be hard to get), dietary fiber...