Fermented cassava dough is available from many African food stores in London. We bought this in Brixton Market. Produced in Ghana, this dough can be used as the basis of swallow dishes like banku, akplé, and fufu, which are eaten with soup or stew. Fermented cassava dough can also be made into a porridge for a hearty breakfast. Traditionally, the dough made from grated cassava tubers takes several days to ferment. Pre-prepared cassava dough is an easy alternative for urban consumers.