Put the turkey parts in a medium saucepot.
Add about six cups of water, or enough to cover the turkey parts, and boil gently for 30 minutes.
Place a colander in another large pot, and drain the turkey broth, setting aside 4 cups of the stock. Let the turkey parts cool enough to handle.
Meanwhile, steam any vegetables in the microwave, (if you are using them.) Alternatively, boil the vegetables in water on the stove until tender. Set aside about one-half cup of the vegetable stock to add to the soup at the end if you want to adjust the thickness of the soup to your liking.
When the turkey parts are cool enough to handle, remove the skin and dice the turkey meat, equaling to about one cup of turkey meat. Set the turkey meat aside.
In a large soup pot on top of the stove, melt the butter over medium heat.
Make a roux by whisking in the flour, salt and pepper into the melted butter until you have a thick paste.
Add the heavy cream and whisk until bubbly.
Blend in the turkey stock.
Add in the cooked rice, (and vegetables if you are using them). Adjust the salt and pepper to your liking. If you'd like the soup to be a little thinner, add some reserved vegetable stock, or water.
Stir over medium heat for a few minutes until all is blended and heated through.