This one is best to go in a smaller group for the 'well worth it' wait. The pork rolls are super amazing as is everything on the menu. You can't go wrong. There are several locations with varying concepts including this, Noodle Bar (casual), Ssam Bar (bit more up-market experimental), Ko famous for their pre-order duck) and the Milk Bar (bakery and coffee shop).
The melt in your mouth pork buns are a must
Pork Bun Perfection