Leftover turkey teams up with sweet potatoes, mixed vegetables, bacon, and optional mushrooms in this great-tasting soup. Half-and-half makes for a richer soup, but you can use a lower-fat milk or light cream if you prefer. Aside from the chopping and cubing, there are very few preparation steps in this soup. Just simmer until it's doneIf you don't care for mushrooms, by all means, leave them out. Add a little more turkey or vegetables if you like, or add a replacement vegetable. A little pimiento would add some extra color to the soup. Finely-diced ham would make a delicious substitute for the bacon.