1. Mix and strain the flour, baking powder and baking soda, set aside for later use, and beat the butter and sugar together
2. Add eggs in portions and stir, then add vanilla extract and salt
3. After evenly adding the filtered dry materials, use a rubber spatula to mix the dry and wet materials
4. Finally, add the chocolate beans and stir evenly, cover the container with plastic wrap and put it in the refrigerator for 12-36 hours
5. After refrigerating, take out the batter and divide about 40 grams of biscuits on the baking tray, keeping a distance of 5 cm between them.
6. Preheat the oven at 350°F, bake for 13-17 minutes, and turn the baking tray 180° in the middle (Note: There is a slight difference between different ovens. After the turntable, it is super easy to batter, don't go too far)
