Mokdong Udon is an udon restaurant in Mokdong, Seoul, serving udon, jjajang, and old-style lunchbox meals. Its street-stall-style udon uses noodles thinner and chewier than standard udon, served in hot broth, while the spicy jjajang is eaten by mixing in a spicy seasoning. Both the udon and jjajang recall the flavors of old street stalls, and the noodles are pulled to order. The menu is simple, centered on udon and jjajang.