1. Add appropriate amount of water to the homemade black sesame filling and stir well.
2. Add flour and yeast powder.
3. Stir well to form a paste.
4. Cover the lid and leave to ferment in a warm place.
5. Ferment to double the volume.
6. Add the right amount of raisins.
7. Stir evenly.
8. Pour the batter into a mold or other container. Coat the inner wall of the container with a layer of oil or a layer of oiled paper.
9. Put it in the steamer.
10. Steam on high heat for half an hour, then open the lid for a few minutes.
11. Just slice it and eat it.
