1. Mix all the ingredients except the butter (boiled egg yolks are sieved into powder) and put them in the bucket of the bread machine, and kneading for 20 minutes.
2. Add butter and continue mixing for 10 minutes.
3. Take out and knead and let stand for 20 minutes.
4. Divide into 8 pieces of about 65 grams of dough, knead and relax for 15 minutes.
5. Roll out into an oval shape, and after turning it over, analyze from the upper and lower thirds inward.
6. Flatten the joints and roll them out again to thin the bottom edge.
7. Roll it into a tube from bottom to top, pinch the joint tightly.
8. Put them into molds or baking trays one by one, and put them in the oven for double fermentation.
9. Unpacking.
10. Brush the surface with butter.
11. Sprinkle a layer of white sugar (granular).
12. Bake in a preheated oven at 180 degrees for 15 minutes to 18 minutes.
13. Finished product.
