1/4 c. soy sauce
1/4 c. Worcestershire sauce
1/2 tsp. onion salt
1 tsp. Accent
1/4 c. liquid smoke
1/2 tsp. salt
1/4 tsp. pepper
1/4 tsp. garlic powder

Pour marinade over steak. Allow to marinate 2 hours or more. Turn occasionally.