- Heat the turkey drippings in the original roasting pan (that you used to roast the turkey) over medium low heat. Once the drippings heat up, sprinkle in the flour a little bit at a time and whisk constantly. 
- Once the flour is added and whisked in, toast the mixture over the heat for a few minutes to get rid of the flour taste. 
- Slowly add the wine a little bit at a time and continue whisking. Cook this over the heat until the liquid reduces. 
- Slowly add the chicken stock, about 1/4 cup at a time, letting the gravy cook for a minute or two between additions to thicken up. 
- Once you've added about 1 1/2 cups of stock, let the gravy cook for about 5 minutes, whisking constantly.  
- If the gravy is too thick, continue adding the rest of the stock a little bit at a time to thin out the gravy to your desired consistency. If you're happy with the thickness, season with salt and pepper to taste. 
- Strain the gravy through a wire mesh strainer to remove any dark bits. 
- Add the butter to the hot gravy and stir just to combine. 
- Pour into a gravy boat and serve.