4 1/2 pounds Ground beef
1 1/2 cups Onion — chopped
2 1/4 cups Catsup
3 tablespoons Prepared mustard
3 tablespoons Worcestershire sauce
2 tablespoons Vinegar
2 tablespoons Sugar
1 tablespoon Salt
1 tablespoon Pepper
18 Hamburger buns — split
Recipe by: Sue Klapper In a Dutch oven, cook beef and onion until meat is browned and onion is tender; drain. Combine catsup, mustard, worcestershire, vinegar, sugar, salt and pepper; stir into beef mixture. Heat through. Serve on buns.