Goseobang Jjamppong is a Chinese restaurant in Jeju that serves jjamppong and tangsuyuk. Its signature dish is gochu jjamppong, made with ttak-saeu and oysters, while the usamgyeop jjamppong is known for its smoky aroma and thick broth. The jjamppong comes in a large bowl and is close to 1.5 servings even without an extra portion. The black pork sirloin tangsuyuk uses Jeju black pork, is tender, and is eaten dipped in salt.