Kotetsu is a teppan restaurant in Seoul that serves okonomiyaki. The okonomiyaki can be customized with pork, daechang, and cheese, and the modan yaki combines okonomiyaki with yakisoba. Ordered dishes are cooked in front of you and placed on the teppan, and the yakisoba comes with mayonnaise on the side so you can change its flavor with aonori powder and a special sauce. The okonomiyaki's taste is ordinary.