Glutinous Rice Balls Stuffed with Purple Yam (紫薯糯米糍)

This is my favorite dish from Mom's tea party. It still taste great after a couple of days. You just need to microwave it for 30 seconds.

Ingredients:

Purple yam - 4-5 medium size
Glutinous rice flour - 260g
Powdered sugar - 50g (~1/4 cup)
Oil - 40g (~3TBSP)
Sweetened condensed milk - 4 TBSP
Water - 150g (~2/3cup)

Dried coconut (fine) - 3oz (3/4 bag of 4oz)
Yield about 1 dozen

Steps:

1. Peel and steam purple yam.
2. Blend the purple yam and sweetened condensed milk.
3. Knead glutinous rice flour, powdered sugar, water and oil into a smooth soft dough.

4. Portion the purple yam filling into round balls.

5. Portion the dough into balls bigger than the purple yam balls. Use the skin dough to wrap around each purple yam filling.
6. Put rice balls in steamer and steam for 10 minutes.

7. Roll the cooked rice ball in coconut shreds while it is still hot. Enjoy the rice ball hot or cold.