Ingredients:
1 cup dry bread crumbs
1-1/2 pounds ground chuck
1/4 cup finely chopped onion
1 egg
1/4 cup ketchup
1/2 cup milk
1-1/2 teaspoons salt
1/4 teaspoon pepper
1/2 cup ketchup
1/4 cup vinegar
1/4 cup packed brown sugar
2 Tablespoons Worcestershire sauce