Obok Sundae Guk is a sundae restaurant in Mullae-dong that serves abai sundae, sundae guk, and suyuk. The lunch set comes with sundae guk, suyuk, and one piece of abai sundae, and ordering suyuk brings broth on the side. Wait times vary widely by visit time: entry was immediate at 17:00 on a weekday, but the wait was 50 minutes at the 11:00 opening. The interior is small, so a waiting line forms often.