Mr. Sundubu COEX Mall Branch is a sundubu jjigae restaurant in the COEX Mall food court in the Samseong-dong airport bus terminal shopping area. It serves several stews, including seafood sundubu and gopchang sundubu, and the bossam set comes with dolsot rice and side dishes. Customers crowd in at lunch, and orders come out quickly. The sundubu jjigae is on the salty side.