Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      pound         to 2 lb sirloin steak -- cut 2 to 2 1/2"
                        -- thick
   1      teaspoon      finely shredded lemon peel
     1/2  cup           lemon juice
     1/3  cup           cooking oil
   2      tablespoons   sliced green onion
   4      teaspoons     sugar
   1 1/2  teaspoons     salt
   1      teaspoon      Worcestershire sauce
   1      teaspoon      prepared mustard
     1/8  teaspoon      pepper

Preparation:

Score fat edges of steak. Place meat in a shallow baking dish. Combine remaining ingredients. Pour over steak. Cover; let stand 4 hours in the refrigerator or overnight, turning steak several times. Remove steak from marinade, reserving marinade. Pat excess moisture from steak with paper towels. Grill steak over medium-hot coals 17 to 20 minutes. Turn; cook 15 to 17 minutes more for medium-rare. Heat reserved marinade on grill. Remove steak to serving platter. Carve steak across the grain; spoon marinade over slices.