Ozeki Hyogo Prefecture The founder, Chobei Osakaya, began brewing sake in the Nada region in Hyogo in 1711. It is one of the oldest and largest breweries in Japan. The name "Ozeki" is the high-ranking title in Sumo wrestling. The champion's title "Yokozuna" wasn't adopted to promise themselves ever-continueing efforts to aim higher in quality. Today it still is one of the leading company to drive innovations in the industry.