1. First mix the powdered sugar and softened butter, and mix it with a spatula.
2. Then use an electric whisk to beat until it is feathery, as shown in the figure
3. Then sift the boiled egg yolks into a bowl of butter. It is easy to pass through the sieve by pressing with a scraper.
4. Then stir evenly
5. Then sift the cocoa powder, salt, low-gluten flour, and cornstarch into the bowl
6. Put on disposable gloves and grab the dough until you can't see the dry powder!
7. Take a small dough weighing about 8 grams and knead it into a small ball!
8. Put it on the baking tray and press it with your thumb to make it form a natural crack
9. Then put chocolate beans on the concave part in the middle
10. The remaining dough is also operated in sequence (preheat the oven to 150 degrees)
11. Put it into the middle of the oven and bake at 150 degrees for 22 minutes (temperature is for reference only)
