Cassava flour is a starch substance extracted from cassava. Cassava is one of the three largest potatoes in the world and is widely planted in tropical and subtropical regions. Cassava is the fifth largest crop in the south subtropical region of China after rice, sweet potato, sugarcane and corn. Cassava flour is also called Thai raw flour. This is the name of a starch, which is extracted from the tuberous roots of tropical plants. This plant belongs to Acer and belongs to the same family as castor, rubber and jatropha curcas. Boiled with water and heated, it will be transparent and elastic in taste.