Legs are dark meat and will render substantial drippings. You might want to use about 4-5 pounds. This is also a good way to create drippings for making gravy in advance.
Turkey Gravy
For the stock:
4 TBSP butter (perhaps more)
6 turkey legs or other dark meat parts (about 6 pounds)
salt and pepper
1 medium onion, peeled, stuck with 3 cloves
3 large carrots, peeled and cut into large chunks
3 stalks celery with leaves, trimmed, cut into chunks
2 bay leaves
12 black peppercorns
1 cup white wine or water
For gravy:
12 TBSP flour
salt and pepper
Heat oven to 375. Melt 4 TBSP butter. Sprinkle turkey parts with salt and pepper, place in roasting pan and brush with melted butter. Roast 2 hours, basing with butter every 20 minutes.
Transfer turkey to stockpot, set roasting pan aside. Add onion, carrots, celery, bay leaves and peppercorns to stockpot. Add cold water just to cover. Bring to simmer and cook, mostly covered, about 6 hours.
Place roasting pan on stove and bring juices to a simmer over low heat. Pour in wine, stirring and scraping. Pour all liquid into a bowl and refrigerate. When liquid is cool, lift of top layer of fat and reserve. Add deglazing liquid to stockpot.
Gravy:
Melt 12 TBSP reserved turkey fat in a skillet over medium heat. Use additional butter, if necessary. Gradually whisk in the flour. Cook until golden brown and toasty smelling, 3-5 minutes or longer.
Whisk in a small amount of stock, then add remainder more quickly and whisk until smooth. Simmer, continually whisking, until thickened. Thin if necessary. Season with salt and pepper. If desired, whisk in a few tablespoons cold butter to smooth and enrich.
Yields 3 quarts. Can be frozen for up to a month.