"The Hausa grow a variety of crops and vegetables during the rainy season, mainly millet, maize, and sorghum over the 4 to 5 month span. The Hausa enjoy a variety of foods. They grind the grains together with maize and it is used for flour with a variety of different foods. Porridge is served with breakfast and sometimes cakes are served that are made of fried beans or wheat flour. Heavy porridge is served with lunch and dinner also with a soup or stew. Like Americans, dinner is the main meal. They eat little meat, but eat lots of beans, peanuts, and drink a lot of milk brought over from the Fulani people."
http://www.mnsu.edu/emuseum/cultural/oldworld/africa/hausa.html
Their food is mainly consists of guinea corn, that is ground up and eaten like porridge that is then mixed with large quantities of red pepper.