Gwanghui Kalguksu is a dak kalguksu restaurant in Jongno that office workers visit for lunch. The kalguksu uses an anchovy broth, and the dak kalguksu has a mild broth with chewy noodles and a peppery, spicy kick. Noodles can be ordered as a double portion, and rice can be added on the side. The shop and its seating are small, which makes eating there uncomfortable.