3 tsp. ground ginger
1/2 tsp. garlic powder (1-2 cloves)
1 tsp. onion powder
2 tsp. Worcestershire sauce
1 tbsp. brown sugar
2 tbsp. vinegar
1/4 c. white wine (optional) if omitted, double vinegar
1 c. soy sauce
1/2 c. water

Combine all ingredients and pour over steaks. Marinate steaks 3-8 hours. After removing steaks, heat remaining marinade to boiling and thicken with cornstarch for an excellent steak sauce.