This tiny neighborhood wine bar has the unusual policy of letting you try before you buy - you can take a sip or two of whatever bottles are open before committing to their wine by the glass. The food is also quite good, with game birds and meats in season and numerous smaller dishes if you just want a quick nibble. Budget around Y4000-7000 at dinnertime.
(Note: this is one of two wine bars in the same building - the other is called Chiori.)
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.