"Bukchon Sonmandu", the main branch located in Hongdae, offers various kinds of dumplings that are handmade. "Pinaengmyeon" is also very popular menu, which you can choose either spicy or mild flavor. You can also take away these dumplings, too.
Many foreigners from all around the world visit "Bukchon Sonmandu" in Hongdae to taste the real Korean style dumplings! You don't have to worry, the store has both Korean and English menus!