The pickling technique of Jiuyuan Village, listed as an item of the intangible cultural heritage of Mentougou District, originated in the Ming Dynasty when Emperor Wanli was on the throne (1572-1620). The local pickles were gradually derived after the sauce was successfully made in the village. With natural green vegetables and local spring water as the major ingredient, and thanks to a series of natural resources such as the suitable temperature, the pickles of Jiuyuan Village are bright in color, tender in texture, and rich in sauce flavor.