Seongil Son Kalguksu is a kalguksu shop in Busan that sells kalguksu and haemul son kalguksu in an old market. The noodles are cut and boiled to order from aged dough, and the shop also serves kongguksu and yeotnal jjajangmyeon. Regulars have been coming here for 20 to 30 years. The portions of kalguksu are generous, which keeps the cost burden low.