Manna Ongsimi Son Kalguksu in Gangneung is an ongsimi restaurant. It serves ongsimi made from grated potato with no starch powder added, along with buckwheat kalguksu. The ongsimi kalguksu has ongsimi, vegetables, and clams in a thick broth made with potato starch, and eating alone is possible. There is no parking lot, so parking is inconvenient.