A woman selling Kwanga/Chikwangue. Chikwangue, also known in Cameroon as bobolo and in the Congo River basin language of Lingala as kwanga, is a starchy, fermented-cassava product that is a staple food across Central Africa. Chikwangue is made by fermenting cassava in water for up to fourteen days, then turning it into a paste and wrapping it in marantaceae leaves for steaming.