1. Put all the bread ingredients into the bread machine, liquid first and then Flour, make a well in the middle of the flour and add yeast

2. Start the bread machine and knead the dough for 30 minutes Until the film comes out, then cover the lid for the first fermentation.Take out the fermented dough, knead it for a few minutes to fully deflate the air, divide it into equal-sized balls, flatten them with your hands, and put purple sweet potato puree in the middle

3.Wrap it like a bun, with the edge facing down, and roll it into an oval shape with a rolling pin

4.Use a knife to make some holes on it.Just scratch the top layer to see the purple filling.

5.Then roll it up, shape it into a circle, and pinch both ends

6.Put it in the oven for secondary fermentation.When it doubles in size, take it out and brush it with the whole egg wash.Sprinkle sesame seeds and preheat the oven at 180 degrees for 20 minutes on the middle layer