Although they only have 4 types of burgers, they are quite special and unique each of them! Went with a large group and most people chose the "Phat" burger (beef patty, onions braised in red wine, tomato, cheese), but I risked and went for "Fancy" (lamb chorizo patty, tzatziki sauce, onions braised in red wine, tomato, cheese). If you like lamb, you must take this one (15,000 for lunchtime with fries and drink, not a bad deal for lamb meat).
The Phat was regular, good in Korean standards, and the Fancy was really a good surprise as I didn't know what to expect from the lamb chorizo. The menu comes with a generous portion of fries and a can of soda. (tea, juice, or coffee too).
I will come back for more lamb hamburger some day~~~