One of most famous beef tongue shop in Tokyo station inside of gate.
Open from 7AM, you can enjoy morning menu until 10AM.
This isn”t the Kobe beef, but you’ll be surprised this tasty “al dente” beef in such price.
You take a ticket in front of the shop. Accessing to QR code on ticket, it shows how many queues now.
[Sendai Tanya Rikyu in Tokyo Station]
https://goo.gl/maps/MPML6QvpacSkHYnf8