Butai 1 Mak is a restaurant near Samseong Station in Gangnam-gu, Seoul, serving Japanese-style tonkatsu and noodle dishes. The menu includes rosu katsu, hire katsu, katsu sando, and mazesoba, with mazesoba available in a spicy version. The tonkatsu is thick, crisp on the outside, and tender inside. During lunch hours, office workers from nearby create a wait of 10 to 30 minutes.