Kava nuts were a type of nut, one of the few foods enjoyed by the Vorta, the other being rippleberries. The Founders left this preference in the Vorta genome as a reminder of their origin as primitive tree-dwellers. (DS9: "Treachery, Faith and the Great River")
According to the Star Trek Encyclopedia, 4th ed., vol. 1, p. 404, the kava nut was the edible fruit of the Bajoran kava plant.
External link[]
- Kava nut at Memory Beta, the wiki for licensed Star Trek works