It will be no surprise that each of these burger shrines has a different formula to an awesome burger. Five Napkin Burger swears by Gruyère cheese. Shake Shack uses potato roll buns and their signature sauce. And McDonalds -- well, we suppose they qualify as an iconic burger joint as well -- is all about the sesame bun and two slices of American cheese. Don't miss Bobby Flay's burger piled high with potato chips!
What makes up your favorite burger?
• Read more: Breaking down better burgers at Nation's Restaurant News
Related: Recipe: Old-Fashioned Juicy Burgers