1. Butter softened and beaten
2. Add powdered sugar and mix well
3. Beat the eggs and add in three times, each time they must be fully fused
4. Add flour and mix well
5. Cover the baking tray with greased paper and prepare the piping bag
6. Put the dough into a piping bag and squeeze out the shape you like
7. Put it in the oven, the middle layer, 190 degrees, 10 minutes, bake twice
