Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      pounds        boneless round steak -- (1/2"-thick)
   1      teaspoon      coarsely ground pepper
     2/3  cup           teriyaki sauce
     1/3  cup           soy sauce
   1 1/2  teaspoons     instant meat tenderizer
     1/8  teaspoon      garlic powder

Preparation:

Sprinkle round steak with pepper; pierce at 1 inch intervals with a meat fork. Place in a large shallow container. Combine remaining ingredients; mix well, and pour over steak. Cover dish; marinate 8 to 10 hours or overnight in refrigerator. Cook over hot coals 3 to 5 minutes on each side or until desired degree of doneness.