Dagwanwon is a Chinese restaurant in Dangsan-dong 4-ga, Yeongdeungpo-gu, Seoul, a six-minute walk from Yeongdeungpo-gu Office Station Exit 3. It serves ganjjajang, samseon jjamppong, and tangsuyuk. The ganjjajang uses a chunjang sauce with reduced sweetness and chewy noodles, and the sauce is thick enough to make mixing difficult. At lunchtime, customers have to line up.