But the fastest-growing restaurant chain in America last year was Five Guys, which specializes in double-pattied behemoths the size of a softball.
And that's just the tip of the arugula. So-called "better burger" joints are one of the fastest-growing parts the restaurant industry. Celebrity chef Bobby Flay launched Bobby's Burger Palace in the Northeast. Elevation Burger is expanding into Kuwait. Mooyah Burgers & Fries, Meatheads and the Shake Shack are looking to expand.
Higher-grade beef, fresher or more creative toppings, and better buns are bringing customers in the door.
