Beef tongue cuisine is a specialty of Sendai, and this is the first Tokyo branch of a famous Sendai shop. The grilled tongue teishoku is a good place to start (Y1300); it comes with a hefty portion of tongue, oxtail soup, and nice spicy pickles. Seating is a bit tight, but prices are correspondingly budget-friendly.
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.