3 lb. flank steak or top sirloin, cut in cubes or strips
1/2 c. sugar
1/2 c. vinegar
2 tbsp. garlic salt
2 c. cooking sherry
1 c. soy sauce
1 c. Worcestershire sauce

Combine above ingredients, pour over meat. Marinate overnight. If too spicy, dilute. Broil for 15-20 minutes turning occasionally.