Gopchangiyagi is a gopchang restaurant in the Daehangno area of Hyehwa-dong, Jongno-gu, Seoul, serving gopchang (grilled intestines), daechang (beef large intestine), and makchang (beef abomasum). Of the three, the mild version is the safe choice. The gopchang arrives already grilled, so it is easy to eat right away. The price is high for what the food is.