For the stock:
1 large onion, chopped
2 carrots, chopped
2 ribs celery, chopped
2 tsp vegetable oil
2 large turkey wings
10 cups cold water (1 or 2 to deglaze the pan, and 8 to add to stock)
4 springs thyme
2 cloves garlic, optional

For the gravy:
2-3 tablespoons reserved turkey fat
3 tbsp butter
1/2 cup flour
about 6 cups reserved, strained turkey stock
salt and pepper to taste
pinch of cayenne

See more at http://foodwishes.blogspot.com/2012/11/make-ahead-...