Garri flour Cooked garri on a plate in Cameroon Whole cassava tubers Peeled cassava pieces. In West Africa, garri (also known as gari, galli, or gali) // ⓘ is the flour of the fresh starchy cassava root.. In the Hausa language, garri can also refer to the flour of guinea corn, maize, rice, yam, plantain and millet. [citation needed] For example, garin dawa is processed from guinea corn ...