Dice the cold unsalted butter. Put unsalted butter in food processor. Sieve cake flour, almond powder, salt, ginger powder, and cinnamon powder .
(If you want more deeper ginger flavored cookie, increase the amounts of ginger powder in double). Add powdered sugar. Grate the butter until you can’t see lumps of butter. When butter is mixed with powder, add egg and mix it until a dough is formed.