We are big fans of Kim Dae Mun which is located in a basement shop at Concorde Hotel.
I have been visiting since my JC days and they have managed to keep their food good and affordably price throughout these years.
I usually have their chicken bulgogi but they also serve a nasty good yukgaejang (μ‘κ°μ₯ or spicy beef soup) which is perfect for this weather. Their garlic chives pancake is also one of the best I have had --- crispy and savoury all in one.