Yotsuya: Liquor shop
Suzuden (Yotsuya: Liquor shop)
Open 9am-8:30pm (Sat -5:45pm). Closed Sundays.
A well-stocked sake specialty store; don't miss the refrigerated rooms down in the basement. There's also a stand-up bar in back with around a dozen sake by the glass along with simple, inexpensive bar food (weeknights only).
Shinjuku-ku, Yotsuya 1-10.