Great Gul Bossam (Steamed pork and oyster)! 20,000won is the minimum portion and even tho it's intended for 1, it can easily fill 2 persons. Banchan and Beef soupcomplimentary.
Directions: from Exit 15 of Jongno3-Ga subway stn, take 1st alleyon left (just b4 AngelInUs cafe), take first alley on ur right. Walk 1-2 mins n u'll find the restaurant (red n yellow sign in Korean)