Planning my annual culinary pilgrimage to Tokyo and am looking for recommendations for a rustic unagi restaurant. In past trips, I've been to both Chikuyotei and Nodaiwa (which I enjoyed immensely) but am looking for something a little more rustic. For instance, on a recent episode of No Reservations, Ivan of Ivan Ramen took Anthony Bourdain to a tiny unagi place that broke down the eel and served its various parts - liver, guts - in different dishes. Any idea where this place is located or where I could find places like it?
Also interested in other similar small restaurants dedicated to specific food items. For instance, is there a restaurant in Tokyo that is dedicated to the preparation of uni?
Any input would, as always, be greatly appreciated.