Step1:Knead all materials (except butter) together to make a dough. Add butter when the dough is smooth. Continue kneading to the expansion stage. Then put it in a container and ferment it to twice the size (or refrigerate it for more than 17 hours). Keep fermenting until the hole in the dough with your finger does not shrink.
Step2:Take out the dough. Exhaust. Divide into 5 parts on average. Roll round. Relax for 1520 minutes. Then press the flat dough. Use a rolling pin to roll it into a round shape. Turn it over. Roll it up. Close the mouth. Connect the two ends into a ring. Then carry out the second hair (ferment it in the warm place for about 40 minutes) until the dough is 11.5 times larger. Use a rolling pin to press out a small hole in the middle of the bread. Put on the filling.
Step3:Lightly smear the whole egg on the outside of the bread.
Step4:Preheat the oven at 180 ℃ for about 5 minutes. Put it in the middle and lower layers of the oven for about 20 minutes (adjust by yourself according to the temperature of each oven).
Cooking tips:How to make the bread stuffing? First cut the potatoes and bacon into small pieces. Put water and a little salt in the pot. First boil the potatoes to 7 minutes. Then put the bacon into the stuffing and cook it a little. Remove and control the water. Then mix it with the salad dressing. There are skills in making delicious dishes.