Ongnan Myeonok is a naengmyeon restaurant on Olle Trail Route 18 in eastern Jeju, serving Baengnyeongdo-style cold noodles and mung bean bindaetteok. The mul naengmyeon uses Jeju buckwheat noodles in a seasoned broth, with kanari aekjeot, vinegar and mustard added to taste. The noodles are chewy, and mung bean bindaetteok can be ordered alongside them. During meal times the dining room fills up and there is a wait.