This is a very good marinade I use on sirloin steaks.
1 lb boneless, beef sirloin steak
1/3 cup soy sauce
2 tbsp apple juice
1 tbsp molasses
1/4 tsp ground ginger
1/3 cup water
Combine the ingredients and pour over meat in a heavy-duty ziplock plastic bag. Marinate for up to 8 hours.