Steam the pumpkin, peel off the skin, and mash it.
In a bowl, mix eggs, sugar, and milk well.
Add the mashed pumpkin and melted butter, mixing thoroughly.
Sift cake flour and baking powder into the mixture and fold to make the batter.
Pour the batter into a mold and bake in a preheated oven at 170°C (338°F) for 30 minutes.
Let the finished cake cool and then remove from the pan.