Gangchanggu Chapssal Jin Sundae Sillimjeom in Sillim, Seoul, serves sundae-guk, sul-guk, and modum. Sundae-guk comes with dadaegi, while the item that is usually absent can be requested separately. The restaurant is open 24 hours, serves food quickly, and accommodates solo diners, but has no parking. Takeout orders often have missing items, so check the contents when you collect them.