Gari is cassava root, dried and ground into a flour. It is used in West-African countries such as Ghana, Sierra Leone, and Nigeria. ... It is used to make a gruel called “fufu” in Nigeria. In Ghana cuisine it is made from fresh cassava, or yucca plant. This food consists of dried yucca fried and greased. This dish is crispy and often added into other foods, such as soups, fish, or stews. Some people, particularly children, create a sweet treat from this food by soaking it in a mixture of sugar and milk.