Yongmun Kalguksu is a noodle shop in Sangil-dong, Gangdong-gu, Seoul, serving kalguksu and summer kongguksu. The broth is a rich anchovy base with hand-cut noodles and sujebi, served with kimchi geotjeori and yeolmu kimchi. Ordering one menu item per person comes with a free upgrade to a large portion. On weekdays from 11:30 a.m. to 1:30 p.m., office workers crowd in and waits are common.