Wash the sweet pumpkin thoroughly, remove the skin and seeds.
Steam or boil the sweet pumpkin until it's tender.
Mash the cooked sweet pumpkin and let it cool.
Add eggs, sugar, and milk to the sweet pumpkin and mix well.
Sift cake flour and baking powder in, then mix evenly.
Add cooking oil and finish the batter.
Pour the batter into a mold and bake in a 180°C oven for 30~40 minutes.
Once cooled, remove from the mold and cut into desired portions.