Tapioca is basically a root starch derived
from the cassava, or yucca plant.
It's often used to thicken soups and sweeten the flavor
of baked goods, and it makes a dandy pudding.
The cassava plant is native
to South America and the West Indies, where its thick,
fibrous roots are used in a variety of forms:
bread
flour, laundry starch, an alcoholic brew,
and of course,
tapioca pudding.
As the Encyclopedia Britannica tells us, it was
probably first harvested by the Mayans.
Budi Acid Jaya, a tapioca starch
producer in Indonesia,
uses processed cassava roots
to make raw materials
for crackers, toothpaste, paper, and textiles.
Visit the site for an overview of the
starch production process.
It involves lots of heat
and water.
We suggest you don't try making your own tapioca at home.
Cassava roots have traces of cyanide in them!
The ever-resourceful Mayans figured out how to extract
this poison for their blow darts,
leaving the uncontaminated roots free for eating.