Seeds from the "oil seed tree" heudelotii, found in tropical West Africa. It is also known as Munguella (Angola), Essessang (Cameroon), Bofeko (Zaire), Wama (Ghana), Okhuen (Nigeria), Kishongo (Uganda), Akpi (Cote d'Ivoire), Djansang, Essang, Ezezang and Njasang.
https://en.wikipedia.org/wiki/Njangsa