July 11/Falls Church, Va./Associated Press Financial Wire -- With a drive-through seemingly on every corner, you might think the market for burgers long ago reached saturation. However, the fastest-growing restaurant chain in America last year was Five Guys, which specializes in double-pattied behemoths the size of a softball.
That is 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.