Does Papal milk exist? Yes, of course! And where does it originate? It is explained in this episode, not only this... We are getting to know here the Vatican industry. We are learning about place of print of Vatican publishing offices and postal stamps. We are visiting the Vatican farm in Castel Gandolfo. We are discovering who are the workers taking care of the Basilica for hundreds of years, as well as the history of the oldest service company of the world: The Venerable Factory of St. Peter.