Preheat An Outdoor Grill For High Heat. In A Bowl, Mix The Ground Beef, Worcestershire Sauce, Basil, Garlic Salt, And Pepper. Form The Mixture Into 4 Burger Patties. Lightly Oil The Grill Grate, And Cook Burgers About 6 Minutes, Turning Once, To An Internal Temperature Of 160 Degrees F (70 Degrees C), Or To Desired Doneness. Serve On Hamburger Buns.