A sister shop of Moto sake bar in Shinjuku, Gem offers a similar selection of premium craft sake in small, 80ml tasting-size glasses. There's seating for around a dozen people at the counter, with standing room for a few more. The kitchen turns out a nice, casual food menu that's designed to go well with sake. Budget around Y6000 for dinner with drinks.
This book will introduce you to more than twenty of Japan's favorite specialty foods that are less well known abroad, along with a guide to the best places in Tokyo to try them and expert tips on what to order. From Bento.com.