Son Kalguksu is a kalguksu restaurant in Guwol-dong, Incheon. Ordering the kalguksu with oysters, clams and egg garnish brings kimchi and barley rice to the table first. The restaurant is open only from 11am to 2pm on weekdays, and the noodles are cut to order after each order, so a line can form. It is closed on Saturdays, Sundays and public holidays.