After transferring roast turkey to a serving platter, pour pan drippings into a large measuring cup. Skim and reserve fat from drippings.
Pour 1/4 cup of the fat into a medium saucepan (discard remaining fat). Stir in flour. Add enough broth or water to remaining drippings in the measuring cup to equal 2 cups; add all at once to flour mixture in saucepan. Cook and stir over medium heat until thick and bubbly. Cook and stir for 1 minute more. Season to taste with salt and pepper. Makes 2 cups (8 to 10 servings).