Gamseng Tako Gangnam Station Branch is a Mexican restaurant in the basement directly next to Gangnam Station Exit 11. Fajita and taco sets come with meat, shrimp, tortillas, side vegetables and sauce, and the tortillas and sauce are refilled continuously. Hot sauce and cilantro must be requested separately, and the tables are spaced widely apart. The wait is long, reaching 40 to 50 minutes at 5:30 p.m. on Saturdays.