1. Dissolve yeast in warm water and stir well. Pour the yeast powder into the flour and stir it into cotton slices with chopsticks.

2. Knead the dough until it is smooth by hand, put the dough in a container, cover it, and ferment it in a warm place to double its size. The length of time depends on the ambient temperature;

3. The inside of the dough is a uniform honeycomb. Sprinkle a little fine flour on the chopping board, knead the dough repeatedly until the surface of the dough is smooth, shape the dough into a column, and cut it into the same size with a knife.

4. Coat the steamer with oil, put the cut steamed bread blank into the steamer, leave a distance in the steamer, ferment for about 20 minutes, steam on high fire for 15 minutes, turn off the fire and stew for 5 minutes, and then open the lid.