Remove the seeds and skin from the sweet pumpkin, then cut into small pieces.
Steam the sweet pumpkin and mash it.
Mix the mashed sweet pumpkin with sugar, salt, and milk.
Beat the eggs and combine well with the pumpkin mixture.
Fill a tart shell (store-bought or homemade) with the pumpkin mixture.
Bake in a preheated oven at 180°C for 20~25 minutes, then let cool to finish.