1. Make soup seeds. Pour flour and water into the pot and stir evenly, turn on the smallest and smallest fire throughout the process, keep stirring to prevent sticking to the pot
2. Heat to 65 degrees, the batter has just set, the texture is similar to lard
3. Close tightly, cover with a layer of plastic wrap and let cool completely
4. Knead the dough. Put milk, high-gluten flour, soup, sugar, salt, and avoid yeast in it, so as not to affect fermentation
5. After kneading out the thick film, add the butter and continue to knead the dough until the glove film is formed.
6. Make the dough smoother, cover it with plastic wrap, and find a warm place for fermentation time
7. Cut the purple sweet potato into cubes, steam it, then add condensed milk and mash it for later use
8. Prove the dough to twice its size, take it out and pat gently to exhaust
9. Smooth again, cover with plastic wrap and let stand for 15 minutes
10. Roll out the dough into a rectangular shape, turn the smooth side toward the outside, and arrange it into a regular rectangular shape as much as possible.
11. Spread the purple sweet potato filling that has just been processed, and remember to spread it evenly, so that it does not affect the appearance
12. Roll it up in one direction and then make it longer
13. Make a mark in the middle with a knife, don’t cut it in the middle
14. Cut it three times evenly, the other side is the same
15. Place the dough strips alternately, the parts that are not cut will be higher
16. Press down the dough gently, the length should be the same as the toast mold
17. Press the closing part to be thinner, and then roll up the dough from top to bottom, pinch the closing part tightly to avoid cracking
18. Put the dough into the toast mold, cover it with plastic wrap, and ferment for another eight to nine minutes full
19. Brush with a layer of whole egg mixture, sprinkle with whole grains, put in the preheated oven, and bake at 150 degrees for 50 minutes
20. After baking, take it out and let it cool completely and slice it for serving
Tips:The purple potato filling can be replaced with red bean paste or other fillings.
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