The recommended dish here is the double-size portion of gyukatsu (beef cutlet) with menchi katsu (deep-fried minced-meat patty) on the side (Y1180). The beef is tender and served rare in the middle, with wasabi and an excellent sauce that's both spicy and a bit sweet. The menchi katsu is the perfect counterpoint - very juicy with lots of onion bits adding texture and flavor, wrapped in a crunchy fried shell.
Gyukatsu is available in single, double and triple servings, with optional grated yam or grated daikon radish toppings for an extra Y100 or so. Purchase a ticket for your meal from the ticket machine at the door when you arrive. No dinner on Saturdays.
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.