1 large onion, chopped
1/2 teaspoon ground cumin
4 garlic cloves, finely minced
1/2 teaspoon salt
Freshly ground pepper to taste
1 (12 ounce) bottle beer
1 (1-1/2 pound) flank steak
Combine all ingredients except steak in a large self-closing plastic bag, mixing well. Add steak to marinade, seal and refrigerate for 12 hours or overnight.
Remove steak from marinade. Broil 5-inches from heat 4 to 5 minutes on each side or until desired degree of doneness.
To serve, thinly slice steak diagonally across the grain.
Makes 4 to 6 servings.