Gayeon Guksi is a Korean restaurant in Seoul that serves Andong guksi and jeon, located in the restaurant alley behind Exit 5 of Seolleung Station. The broth is made from sagol, and the thin noodles are made from dough rested since early morning; the guksi can be ordered to share. It opens at 11:30 a.m., has a break from 3 to 5 p.m., and is closed on Sundays. Waits get long during the weekday lunch peak.