Method:
1. Sift the flour and baking powder together, put them on the table, and put them into a ring-shaped dough nest. Put the dry yeast into the dough nest, mix well with a little warm water, add sugar and warm water, and mix with flour and baking powder.
2. Put the dough on the roller of the dough press and overpressure it until the surface is made into 12 mushroom shape with different sizes, and steam it slightly.
3. Sprinkle a proper amount of cocoa powder on each mushroom and serve.