Mike learned this extremely valuable skill while working in a student co-op at UCLA, where he did his graduate degree (he’s a scientist). This co-op was essentially a very cheap dorm where students chipped in by working in various duties around the facility.
He chose the dining hall, where he spent hours rolling breakfast burritos for his fellow residents, learning the tricks of a well-tucked roll from the head chef, who was Mexican and had distinct opinions on the topic.