Seoil Sundae Gukjeon 1 is a sundae restaurant in Seoul that serves vegetable sundae and sundae guk. The vegetable sundae is made with dried radish greens and glass noodles, and the thick broth is boiled deeply from pork bones. It has operated since 1993 and has a main building and an annex, and it also takes takeout orders. At lunchtime the dining room is very crowded with office workers.