1 can (8 ounces) water chestnuts, drained and chopped
1/3 cup teriyaki sauce
2 tablespoons chopped green onions
Salt and pepper to taste
1-1/2 pounds ground beef
7 hamburger buns, split
14 tomato slices
7 lettuce leaves
In a large bowl, combine the water chestnuts, teriyaki sauce, onions, salt and pepper. Crumble beef over mixture and mix just until combined. Shape into seven 1/2-in.-thick patties.
Prepare the grill for indirect heat. Grill, covered, over indirect medium heat for 6-8 minutes on each side or until meat is no longer pink and a thermometer reads 160°. Serve on buns with tomato and lettuce.