19. Sub Zero
''Sub Zero was started when husband and wife team Jerry and Naomi Hancock wanted to create a more customizable frozen dessert experience. Using his background in chemistry, Jerry developed a method for flash-freezing ice cream using liquid nitrogen, for which he received an exclusive patent in 2014. The couple opened their first location in Orem, Utah, and allowed customers to choose their milk base, flavors, mix-ins, and texture. Because each customer order is flash-frozen on the spot, Sub Zero stores don’t even need freezers.
Founded in 2004 and franchising since 2005, the number of locations currently stands at 59, three of which are company-owned and one of which is located outside the U.S.h
(This was originally published at www.keyt.com, you can read the original article here)