>> can i taste some? >> ah, s i! (laughs) pecorino cheese is made from sheep's milk and rome is famous for it. historically the animals were raised all around lazio as a cheaper alternative to cattle and crops. vincenzo goes a step further than most sellers and searches in some unlikely places for cheese that also helps his community. what does that mean? >> massimiliano: in a jail. in a jail. >> in a jail. jail. jail. >> in a jail. oh ok. only in italy would an ancient cheese recipe be saved by prisoners. [speaking non-english]