Oseosan Kongguksu is a kongguksu restaurant in Dujeong-dong, Cheonan. It grinds soybeans to order and serves thick kongguksu along with haemul pajeon and mandu. It is open from 11 a.m. to 4:30 p.m., closed on Wednesdays, and closes for the day when the soybean broth runs out. With seven or eight tables, waiting is standard.