1 can beer
1 tbsp. instant beef bouillon
3 tbsp. vegetable oil
1 onion, sliced
2 tbsp. lemon juice
1 - 1 1/2 lbs. flank steak, scored

In a saucepan combine all ingredients except steak and heat until bouillon dissolves. Marinate steak for at least 4 hours. Excellent on the grill.