Wonjo Hongdukkae Son Kalguksu is a noodle shop on the first floor of a commercial building in Bupyeong Market, Incheon, serving heukmi son kalguksu, sujebi, and pat kalguksu. It also offers deulgireum memil guksu and steamed mandu, with side dishes and water self-served. Payment is made in advance, and a wait forms during lunch hours. The kimchi is aged rather than freshly made geotjeori.