Octoberfest Flank Steak

1 cup dark beer or ale
1/4 cup vegetable oil
2 1/2 tablespoons Dijon-style mustard
1 teaspoon minced garlic
1 tablespoon Gravy Master
1 flank steak (1 1/2 to 2 pounds)

Directions:

1. In a bowl, mix beer, oil, mustard, garlic and Gravy Master.
   
2. Put flank steak into a zip-lock plastic bag.
   
3. Refrigerate 24 hours.
   
4. Remove steak from marinade and broil 2 to 3 inches from heat source 6 to 8 minutes, turning once.
   
5. Flank steak should be served rare. To serve, cut very thin diagonal slices. Makes 4 to 6 servings.