1. Remove turkey from roasting pan; let stand for 30 minutes. Pour pan juices from roasting pan into a fat separator. Let stand until fat rises to the surface.

2. Place roasting pan over medium-high heat; add 1 cup giblet stock. Using a wooden spoon, scrape up browned bits from bottom of pan until liquid comes to a boil.

3. Place 2 cups stock and flour in a small jar or container with a tight lid. Cover and shake until well combined; pour into roasting pan. Stir to combine and return to a boil. Cook until gravy is reduced and thickened.

4. Add defatted pan juices and cook until heated through; season with salt and pepper. Strain and keep warm until ready to serve.