Sabudana (Cassava)

 Sabudana or Tapioco is a starch extracted from Cassava root. It is purely a carbohydrate source, generally rich in calcium, ascorbic acid and contain significant amounts of thiamine, riboflavin, and Niacin. 

Making of Sabudana
http://www.youtube.com/watch?v=hM0G6b0I7TI