Rinse the pumpkin thoroughly, remove the seeds, and cut it into appropriate pieces.
Place the pumpkin pieces in a steamer and steam until tender.
Remove the skin from the steamed pumpkin and mash the flesh.
Put the mashed pumpkin and water into a pot and bring to a boil over medium heat.
Gradually add rice flour, stirring constantly to prevent lumps.
Season with salt and cook for a little longer, then serve in a bowl.