Metro Burger's premium patties come in one shape but three sizes: $5.75 for a third-pounder, $7.25 for two-thirds of a pound, or $8.75 for the plate-abusing one-pound pattybomb. Once you've sized up your stomach, move on to the meat. Patty options include beef, ground chicken breast, turkey burger, or special house-made veggie burger. Slap it between wheat, egg, or pretzel buns, and cheese it with blue, cheddar, swiss, havarti, pepper jack, American, provolone, or smoked gouda. Then, choose from 16 free toppings (such as pineapple and tomatoes) and 12 special sauces (including chipotle-ranch and horseradish mayo) to give your creation life before immediately taking it away. Burger combo classics are also available for diners who refuse to create a Frankenburger. Click here to see the full menu of massively customizable eats.