Peel and cut taro into 1 inch pieces.
Steam taro for 15 minute or until tender (when you can easily poke through it with a fork).
Transfer taro to a bowl and mash with a fork while it’s still warm.
Stir in tapioca flour and stevia.
Stir in hot water. Using your hands, knead mixture into a dough. Then, shape the dough into little round balls. After all the dough is used up, lightly dust the taro balls with some tapioca flour. Get rid of excess tapioca flour using a sieve.
Prepare an ice bath.
Bring a large pot of water to a boil. Add taro balls and cook for 1 minute or until they float. Drain and transfer to ice bath immediately. Drain again and the taro balls are ready for use.