Tiliacora triandra

Tiliacora triandra is a species of flowering plant native to mainland Southeast Asia and used particularly in the cuisines of northeast Thailand and Laos. In the Isan dialect of Lao, the language of northeastern Thailand, it is called bai yanang or bai ya nang (ใบย่านาง, literally "yanang leaf"), or simply yanang or ya nang (ย่านาง). In Laos, it is also called bai yanang (ໃບຢານາງ). In Khmer, it is called voar yeav (វល្លិយាវ). It is a climbing plant with deep green leaves and yellowish flowers, tolerating only very mild frost....read more on Wikipedia.