Wonjo Ilmi Makchang Gopchang is an old restaurant near Jongno 3-ga Station in Seoul that serves gopchang (grilled intestines) and makchang (beef abomasum). It stir-fries vegetable gopchang and finishes the meal with fried rice. The space is small and cramped. When the gopchang is undercooked, it has a strong gamey or fishy smell.