Akaoni
The emphasis here is nama, unrefined, unpasteurized sake. About 80 kinds from 60 brewing companies are available daily. You may want to sample this unique beverage while in Tokyo, since you won't find it at home: nama is short-lived, too delicate and fresh to transport or export, so it's not widely available overseas. You can accompany your choice with authentic Japanese fare, served here as small bites. Reservations are recommended.