Ttukseom Station tonkatsu dinner with no wait for cheese katsu: Kosi
Kosi Seongsu Branch is an udon and tonkatsu restaurant one minute from Exit 6 of Ttukseom Station in Seongdong, Seoul. Arriving at 6:30 pm meant sitting down with no wait, and the order was a spicy katsudon set and a cheese katsu set, each with kake udon added, plus inari sushi (fried tofu rice pockets) on the side, with the bouncy 48-hour aged fresh udon noodles and the genuinely spicy katsudon the most memorable parts. For a filling meal in Seongsu, Kosi Seongsu Branch was a solid pick.