Ice Cream Lab co-owners Joseph Lifschutz and Tommy Ngan have been friends since boarding school. At 25, the two are already entrepreneurs who have dabbled in real estate and family business. Last year ...

Tim Pitts adds a mixture of milk and sugar to the stainless steel machine, then clamps shut the metal chute. As the machine starts to whir, he explains to a group of eager children that in 20 minutes ...