This burger-and-shakes joint founded by the owners of Melting Pot Restaurants has been changing its diner-style design, with a major brand refresh in the works. In February, the company announced the addition of a full-service bar at its Ocala, Fla., location, serving up both cocktails and Shaketails (boozy shakes), and it plans to open its first freestanding unit this year. The restaurant also plans to open sites in Tampa International Airport.

LocationTampa, Fla.
2015 Systemwide Sales$25,400,000*
% Change in Sales73.5%
2015 U.S. Units21
% Change in Units40.0%
2015 Average Unit Volume$1,410,000*
% Change in AUV-3.7%
Future 50 Year2016