Wash the pumpkin thoroughly, remove the seeds, and steam it.
Mash the steamed pumpkin and, while still warm, mix in milk, sugar, and salt.
Sift the cake flour and baking powder together and combine.
Mix the pumpkin dough with the dry ingredients until evenly combined.
Pour the batter into a mold and smooth out the surface.
Bake in a preheated oven at 180°C for 25 minutes.