1 sesame bun top, cubed
1/2 cup mayonnaise
1/4 cup sour cream
1/4 cup blue cheese crumbles
Splash Worcestershire sauce
Salt and freshly ground black pepper
1 pound ground beef, 80-percent lean
Salt and freshly ground black pepper
4 slices Cheddar
2 heads romaine, chopped
1 tomato, sliced
1/2 red onion, sliced
1/2 cup chopped cooked bacon