Tsukishima: Izakaya
Ajisen (Tsukishima: Izakaya)
Open 5:30-10:30pm (LO). Closed Sundays, Mondays.

A tiny, legendary sake pub with an unusual selection, including many rare koshu (aged sakes). There's also a big list of shochu made from sugar cane. Food highlights include the anago dishes and the thick, juicy satsuma-age fishcakes, which are brimming with bits of onions, carrots and water chestnuts. Budget around Y10,000 for food and drink. (No English spoken or English menu.)

Chuo-ku, Tsukishima 1-18-10.
Tokyo Beyond Sushi - the guidebook
Tokyo Beyond Sushi
Explore the hidden side of Tokyo dining
Charcoal-grilled pork on skewers, udon noodles in curry-flavored soup, octopus dumplings, deep-fried beef cutlet -- there's a whole world of exciting food in Tokyo that food-loving visitors often miss out on.

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.
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Venue listing from Bento.com5 Star Rating: highly recommended