Dredge the turkey pieces lightly in flour. Melt the butter in a large skillet, and when it is foaming brown the pieces of turkey in the fat, adding more butter if needed. .
Transfer the turkey to a large (6 to 8 quarts) casserole or baking dish.
Rinse the skillet with the white wine, and add to the turkey along with the bacon, onion, giblets, seasonings, and broth. Cover the casserole and bake in a 325°F oven 1-1/2 to 2 hours, or until the turkey is just tender.
Remove from the oven and drain off the liquid, leaving the turkey in the casserole
Skim off any excess fat from the liquid. Pour the liquid into a saucepan, add the heavy cream, and bring to a boil.
Drop small balls of kneaded butter and flour (beurre manié) into the sauce, stirring constantly till the mixture has thickened. Correct the seasoning and add the bourbon, if you like.
Return the thickened sauce to the casserole and bake another 15 minutes. Sprinkle with chopped parsley, and serve with mashed potatoes, fresh carrots or turnips, and crisp fresh rolls.