Wakana serves excellent charcoal-grilled chicken and pork on skewers along with a well-chosen list of around twenty types of sake. The restaurant stays open a couple of hours later than most other places in the area, so if you're looking for good sake in Yotsuya after 11pm, this is probably your best bet. Plan to spend around Y3500 for food and drink.
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.