Gangnam Tops are the stems of a plant originating from South Korea, also found in parts of China and Thailand. Gangnam Tops belong to the sedum family. We all know sedum best as a ground cover plant; it is less well known that various varieties are actually edible. In Korean cuisine, sedum was recognised as an edible wild vegetable as early as the 16th and 17th centuries: Namul, used in dishes such as Dolnamul. These plants only grow in the wild.
Koreans know the product mainly as a spring vegetable, and attribute a number of positive properties to it. It is claimed that the plant counteracts the ageing of young connective tissue due to the high concentration of polyphenols.