Oregano Lemon Pork Burgers: Omit mustard, Worcestershire sauce and beef. Add 1 tablespoons chopped fresh oregano, 2 teaspoons grated lemon rind and 1 lb lean ground pork. Cajun Chicken Burgers: Omit mustard, Worcestershire sauce and beef. Add 1/4 cup chopped fresh parsley, 2 teaspoons Cajun seasoning and 1 lb ground chicken.
In a medium mixing bowl, beat egg and water with a fork.
Mix in bread crumbs, onion, mustard, salt, Worcestershire, and pepper.
Mix in beef. Shape into 1/2-inch thick patties.
Place patties on greased grill over medium-high heat; close lid and cook, turning patties once, for about 10 minutes or until no longer pink inside. Place in hamburger buns.