Hunan Grilled Steak

1 1/2 pounds flank steak
3 Tbsp dry sherry or chicken broth
1 egg white
3 1/2 Tbsp cornstarch
3 Tbsp vegetable oil, divided
3 Tbsp soy sauce
2 green onions, cut into 1/2 inch lengths
grated peel of 1 orange
2 tsp grated fresh or 1/2 teaspoon ground ginger
1 Tbsp sugar
1/2 tsp cayenne pepper

Preheat grill or broiler. Place steak in large baking dish. Combine sherry, egg white and cornstarch; stir until smooth. Stir in 2 tablespoons oil. Coat steak with mixture. Combine remaining oil, soy sauce, green onions, orange peel, ginger, sugar and cayenne pepper. Divide mixture between 2 small bowls; set 1 bowl aside. Grill or broil steak over medium heat, turning and brushing with soy sauce mixture. Cook 10 minutes for medium, or until desired doneness. Remove steak from heat; let rest 5 minutes. Slice diagonally into strips. Top with reserved soy sauce mixture.