Cream butter, baking powder, baking soda, salt, and sugar.
Add egg and yolk and mix until homogenous
Add flour and mix to combine into dough.
Split dough in half. Mix strawberry powder into one half and matcha into the other.
Roll each color dough into a 1/4 inch thick rectangle (roughly 8x11"). Place pink rectangle on top of green rectangle and roll into a long log.
Wrap log in plastic wrap and leave in fridge to chill 4 hours to overnight.
When ready to bake, preheat oven to 350 degrees and line three baking sheets.
Slice cookie log into 1/4 inch thick circles. Place on baking sheets and bake for 10 minutes.