1. Stir the butter with sugar after softening
2. A whole egg
3. Stirring
4. Add coffee powder and stir in a small whisk
5. Add low-gluten flour and baking powder
6. Stir irregularly, and must not stir in circular motions. Will produce gluten and affect the taste
7. Mold to make the shape you want
Tips:180 degrees, about 20 minutes. I took the test for 25 minutes, and I was a little confused.
