Combine teriyaki sauce, sherry and ginger in small bowl. Place beef steak and marinade in food-safe plastic bag; turn to coat. Close bag securely and marinate in refrigerator 6 hours or as long as overnight, turning occasionally.
Remove steak; discard marinade. Place steak on grid over medium, ash-covered coals. Grill, covered, 25 to 28 minutes for medium rare doneness, turning occasionally. Remove; let stand 10 minutes. Carve into thin slices.
Servings: 6 to 8