Put all the ingredients except butter into a basin, stir them with chopsticks into a flocculent shape, and then rub them into a thick batter by hand. This is the grabbing stage of batter. If you have enough time and strength, you can always rub it by hand. Or use the chef's machine directly, saving time and effort. Knead the dough with a hook-shaped stirring rod for five steps, so that it won't stick to the surface and a little gluten will come out.
Add butter, continue to turn on the fifth gear and stir for about ten minutes. In this process, you will feel particularly decompressed. After the dough surface is smooth, gently push the dough and pull out the light-transmitting film. There are many exaggerated glove films on the Internet. You don't have to do this. For this hot dog bag, pulling down the light and seeing the fingerprint is a success. It doesn't matter if the edge is not smooth after the film is torn! )?
Put some oil on the bottom of the big basin to prevent it from sticking to the bottom. After the dough is shaped, put it in a basin. It is still very flexible at this time. Bake in a 35-degree oven for 50 minutes, and it will be twice as big. Pour hot water at the bottom of the oven to increase the temperature and humidity and make the yeast more active. Send twice as big, insert your fingers, do not rebound, and the first fermentation is completed! Put the dough on the mat and hit him with a set of fists first to let it fully exhaust. Cut into six pieces of similar size, arrange them into balls, cover them with baking paper, wake them for 20 minutes, and press the baking paper with a cutlery knife. ?
After proofing, roll the dough into an oval shape and slowly roll it into a spindle shape with two thick ends and a thick middle. The joints should be squeezed hard to make the dough stick firmly and prevent it from bursting when it is served for the second time. After shaping, put it in a paper mold and prepare for the second round. Don't fill the paper mold with dough size, leaving room for the second round. By the time it became twice as big and twice as small, it had been distributed. Spread some egg liquid on the surface and bake it in the oven. Coating the remaining egg white on the surface of this hot dog will make it more shiny. Preheat the oven, heat it up and down at 180 degrees, and bake it for 18 to 20 minutes.