Ingredients:200g glutinous rice flour
pinch of salt
1 tbsp tapioca flour
1-2 sweet potato, cut into pieces, steamed until soft and mashed
Filling for the ball:
1.Bring water, salt and tapioca flour to a boil over low heat. Keep stirring until almost transparent and sticky (texture a bit like glue.)
2.Pour the mixture immediately into the glutinous rice flour in a large mixing bowl. Stir till it is well absorbed. Add the mashed sweet potato and mix well to form a dough until the dough no longer sticks to your hand.
3.Pinch a small piece of dough into small balls with your palms. Then flatten the ball and put a bit of the filling in the centre.
4.Seal the ball and roll again into round balls. Bring apot of water to boil. Drop the balls into boiling water until they float to the surface. Then it's ready to be removed with a strainer.
5.Coat the round balls with grated coconut and serve immediately.