1, first add 250g of flour, an egg, 4g of yeast powder and a little sugar into a container, and mix the flour with warm water.

2. Then knead it into a smooth dough and ferment it to twice its original size.

3. Then steam the purple potato and press it into mud.

4. Then divide the dough into six evenly sized agents and roll them into pancakes, one layer of pancakes and one layer of purple potato pears. This cycle is repeated five times.

5, then evenly cut into eight parts, and the two sides are diagonally glued together.

6, then wake up for half an hour, put a layer of egg liquid on the surface, sprinkle some bread crumbs, steam on the pot for half an hour, and stuffy for five minutes.

Purple sweet potato is rich in dietary fiber, starch, vitamins, trace elements (selenium, iron, calcium, potassium, etc.), anthocyanin, glycoprotein, carotene, dehydroepiandrosterone and other functional factors, and has the functions of antioxidation, anti-tumor, memory enhancement, prevention of hypertension, myocardial repair, alleviation of liver dysfunction, and enhancement of immunity.