Machos Steak Main Branch is a steak restaurant in Sinsa-dong, Gangnam-gu, Seoul, serving ribeye and Macho tenderloin steak. The meat is tender and juicy, pairs well with the sauce, and the portions are filling. The steak arrives rare, and you finish cooking it to your liking on the hot plate and melt butter over it. Staff explain how to eat it, and a wait clears quickly.