1. Soften butter, add powdered sugar and stir well.

2. Add the egg mixture and stir well.

3. Add low-gluten flour, knead into dough, refrigerate for half an hour, roll thin and press into a circle.

4. Add butter and powdered sugar to make it fluffy

5. Add the egg mixture and stir well. Sift in low-gluten flour and cocoa powder and mix well.

6. Extrude the shape outside the round biscuit. Put it in the oven 175 degrees 15 minutes.