Seolleung Eulji Sundaeguk is a sundae specialty restaurant near Seolleung Station in Gangnam-gu, Seoul, selling sundaeguk and pork offal. The mild broth holds plenty of head meat, various pork offal, and sundae, with kkakdugi fermented to the right point. It is open 24 hours a year-round, so you can visit at any time you want. The basic side dishes are on the sparse side.