1. Bananas are pressed into banana puree.

2. Add baking soda and stir well.

3. Stand still 1 hour

4. After1hour, add sugar to the eggs and stir well.

5. Sift in self-raising flour and salt.

6. Stir well

7. Add banana puree in Exercise 2 and mix well.

8. Pour in vegetable oil and mix well, then let it stand 1 hour.

9. Pour the batter into the mold covered with baking paper.

10. After the water in the steamer is boiled, put it into Method 9. Steam on high fire for 40 minutes.