1. Cut the purple sweet potato in half and cook it, grind it into mashed potatoes, put it in a warm place with 100 grams of flour, 2 grams of yeast, 30 ml of water and the purple sweet potato dough, and ferment for 1 and a half hours
2. 200 grams of flour, 4 grams of yeast, 80 milliliters of water and white dough, put it in a warm place for fermentation for 1.5 hours and wait for the dough to form a honeycomb shape
3. Knead the white dough out of gas, divide it into equal-sized noodles, and roll them out into noodles the same size as the buns
4. The purple sweet potato dough is also divided into equal-sized noodles and rounded
5. Put the purple sweet potato dough in the white dough, wrap it up like a bun, close it down, and arrange it into a beautiful circle
6. Cut the cross knife on the dough, put it in the steamer and let it stand for 15 minutes for the second fermentation
7. For a pot of cold water, turn the heat to a high heat for 20 minutes after the low heat is up. Turn off the heat and simmer for another 5 minutes. A beautiful plate of purple sweet potato blooming buns is just fine
Tips:In order to prevent the buns from suddenly shrinking in the cold air, after steaming, turn off the heat and simmer for 5 minutes.
