POUR drippings (juice and fat) from roasting pan into a heatproof measuring cup or fat separator. Let stand until fat rises.

REMOVE 1/4 cup of the fat; return to roasting pan. Discard any remaining fat. Add enough water or broth to the remaining drippings to measure 2 cups.

GRADUALLY add flour to drippings mixture, stirring constantly with wire whisk until well blended.

RETURN drippings mixture to roasting pan over two burners. Bring to a boil. Reduce heat to medium-low; simmer 5 to 10 min. or until slightly thickened, stirring frequently.

SEASON to taste with pepper, stirring lightly with a whisk.