Tri-color German Cookies

The striking colors of this cookies and the aroma of the Cranberry German Cookies before this, is what gets me to bake this Tri-color German Cookies.  Since I have Matcha Powder in my pantry, it's no harm trying it out.

Ingredients:
125g unsalted butter (room temperature)
50g icing sugar
125g potato starch (sifted)
90g plain flour (sifted)
10g milk powder (sifted)
1.5g matcha powder (sifted)
2g cocoa powder (sifted)
1 tbsp. milk powder (sifted)

Methods:

1. In a mixer bowl add unsalted butter and icing sugar.  Beat using medium speed until light and fluffy.  In between beating scrap the sides down with a rubber spatula.
2. Add in potato starch, plain flour and milk powder.  Mix using a rubber spatula until well combined.  
3. Divide the dough into three parts and put them in separate bowls.
4. Add sifted matcha powder into one part and mix using a rubber spatula until well combine and set aside.
5. In another part add in sifted cocoa powder and mix until well combine and set aside.
6. Add 1 tbsp. sifted milk powder into the last part of the dough, mix well and set aside.
7. Cover the bowls with cling wrap and chill in the fridge for 20 minutes.
8. To make the tri-color balls: pinch a bit of dough from each color, roll it into small balls and place them next to each other on a plate.  Pick up the 3 balls with the right fingers,  place them on the right palm and softly roll using both palms to make a tri-color balls.  Place them on a lined prepared baking sheet and use the back of a fork to press on the balls.  Repeat until all is done.
9. Bake in a preheated oven of 160 degree Celsius for 15 minutes.
10. Cool on a wire rack and store in airtight cookie jars. 

This recipe is adapted from 'Little Duck's Kitchen' with slight amendment to suit my taste bud.