German Green Tea Butter Cookies

This cookie literally melts in your mouth! it's THAT soft, melty and fragile...

Ingredients
250g butter (i used salted butter)
80g icing sugar (sifted)
250g potato starch
100g plain flour
1 tsp (or more) green tea powder

Method
1. Beat butter and icing sugar till well combined.
2. Sift in potato starch and plain flour. Mix well.
3. Divide batter into 2.
4. In one batter, add in the green tea powder and mix well.
5. Take some dough from each batter, roll into a ball and lightly press it on a baking tray.
6. Bake in a pre-heated oven 170C for 20 minutes.

Note: You can replace green tea powder with cocoa powder.