Mix the flour and baking powder in a separate bowl and sieve them into the egg mixture. Mix again on high speed until the ingredients form a thick mass.
½ teaspoon baking powder , 2 cups flour
Transfer the paste in portions to your piping bag. You can use a round-tip nozzle or if you are using a plastic piping bag, you can simply cut a small hole in the tip
Pipe a little round, about 3 cm large mounts onto thetray. Then, leave the cookies to dry for at least 12hours or overnight.
Preheat your oven to 160° /320°F and bake them for about 20 minutes. Then, remove them from the baking tray.