1. Ingredients: several purple potatoes, bread flour 1h, 1 egg, 2 teaspoons of black sesame seeds, moderate sugar, 1 bag of milk, 1 teaspoon of butter, moderate water, a little salt, a little yeast.

2, the purple potatoes peeled and washed, cut into small pieces, and then put into the steamer to steam (about 20 minutes or so).

3. During the time of steaming the purple potatoes, prepare a mixing bowl and pour 1h of bread flour, 1 teaspoon of sugar, a little bit of yeast, a little bit of salt, and the right amount of warm water into it, form the flour into a dough, and then seal it and let it ferment for about 40 minutes.

4: Take out the steamed purple potatoes and mash them with a rice spoon, then add 2 teaspoons of sugar, 2 teaspoons of black sesame seeds, 1 teaspoon of butter, and 6 teaspoons of milk (so that the purple potatoes won't be too dry, and the finished product will have a milky flavor), and then mix well.

5: Take out the fermented dough, use a rolling pin to roll the dough into a thin oval shape, and place the mashed purple potatoes in the center of the dough, spreading the mashed purple potatoes a little thicker.

6: Beat the eggs in a bowl and make an egg wash of even color, then spread the egg wash on the edges of the crust and fit the crust.

7, use a knife to cut the long dough, one by one on the baking sheet, at this time the oven preheated at 200 degrees for 5 minutes, and then brush a layer of egg wash on each cut dessert, sprinkle a few sesame seeds, and so on the oven preheated, put into the oven at 200 degrees and bake for 20 minutes.