This gorgeously appointed izakaya serves Hokkaido cuisine - top-grade charcoal-grilled seafood, meats and vegetables as well as assorted sushi. Pretty much everything we've tried has been excellent, including very tasty grilled lamb and chicken, eggplant, shiitake and bamboo shoots. Also highly recommended dish is the "hassan set" - eight bite-sized seasonal delicacies served on seasonally appropriate pottery (Y1480 per person).
The drinks menu features more than a dozen local Hokkaido sake, and three-part tasting flights (Y1260) are a nice way to try them out. (There's also a shochu tasting flight.) The spacious counter is the best place to sit for 1-3 people; there are also tables overlooking the refurbished Tokyo Station and comfortable private rooms. Budget around Y6500 for dinner and drinks. Lunch starts at Y1000, and is served until 5pm.
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.