If I can only order one dish, the Fat Cow donburi would be it! Sliced beef with onsen egg on a bed of truffle oiled rice. So good! Their Foa Gura donburi is good too, but not as great! It lacks the onsen egg and the rice is marinated with black sauce instead. Reservations are a must or you'll risk being on waitlist. Definitely go for lunch as it's more affordable.