To make sauce: stir together 1/2 cup mayonnaise, 1/4 cup chili sauce and 2 tablespoons dill pickle relish. Gently mix hamburger with Worcestershire, salt and pepper; shape into six 1 inch thick burgers. Heat hamburger buns on a grill or in oven. Spread 1 tablespoon sauce on buns, top with tomatos and onions.
Grill or pan fry burgers, turning once, and cook till no longer pink. Top with cheese; cover and continue cooking until cheese is melted. Add burgers to buns and serve.
Servings: