To give diners the option to fully customize their dessert, Sub Zero lets guests pick their own type of milk, flavors and mix-ins before ice cream is frozen before their eyes, using liquid nitrogen poured from steel tanks. Going beyond the spectacle of to-order freezing, the chain rolled out a new mobile app in November that includes both online ordering and access to coupons.

LocationProvo, Utah
2015 Systemwide Sales$29,600,000*
% Change in Sales22.3%
2015 U.S. Units45
% Change in Units32.4%
2015 Average Unit Volume$750,000*
% Change in AUV-0.7%
Future 50 Year2016