In ShortCrowds of couples, teenagers and parents with toddlers press up against the long refrigerated display case at this dessert chain, where a variety of ice creams, frozen yogurts and sorbets are made in-store daily. Customers choose flavors like sweet cream, cake batter or banana, add mix-ins--ranging from candy bar chunks and Gummi bears to hot fudge and peanut butter--then servers mash it all together on a frozen slab of granite.