It is the flour of the cassava root. It is sold as plain or toasted and in Brazil it is eaten daily all over the country as an accompaniment of meats and cured meats, barbecues, stews and rice and beans. It is also used to make farofas (Brazilian crumbs) and to thicken fish stock (and other stocks).The delicious exotic mixture of stock and cassava flour is known in Brazil as pirão. Available online*.
List of recipes of this website using cassava flour: