50g purple sweet potato puree

120g water

200g flour

2g yeast

10g sugar

1g baking powder

120g water

200g flour

2g yeast

10g sugar 1g baking powder 1All materials. 2 Cut the purple sweet potato into pieces, steam them and press them into puree. 3. Add flour to baking powder and add sugar. 4 Then add purple sweet potato puree and knead evenly. 5 Add an appropriate amount of purple sweet potato yeast water to the purple sweet potato flour. 6 Knead the purple sweet potato flour into a dough and leave it in a warm place for 45 minutes. 7 Add baking powder, sugar, yeast water to another portion of flour and knead it into a dough. 8 Let the kneaded dough rest in a warm place for 45 minutes. 9. Roll the two pieces of dough into rounds, flatten them, and put them together. 10. Roll the dough into 5MM pieces. 11 Roll up two pieces of dough. Cut 12 pieces into 5CM size, put into steamer and steam for 20 minutes, then steam for 5 minutes.