Guk sumassim & Gosari Massim is a restaurant near Jeju Airport and Ujin Haejang-guk that serves Jeju-style gukbap and gogi-guksu. Its main dishes are momguk, gosari yukgaejang, and gogi-guksu. Customers have repeatedly moved here when the wait at Ujin Haejang-guk runs over an hour and a half. In the evening it also offers drinking snacks such as dombe-gogi and glutinous rice sundae.