1 (10 oz.) bottle soy sauce
1/4 c. brown sugar
1/2 c. pineapple juice
1/4 c. vegetable oil
2-3 cloves garlic, cut in 1/2
Flank steak

Combine all ingredients. Marinade flank steaks for at least 4 hours, turning 3-4 times. Broil or BBQ. Slice flank steaks on the diagonal across the grain.