Wash the sweet pumpkin thoroughly, remove the seeds, and cut into appropriate sizes.
Pour water into a pot and add the sweet pumpkin. Boil until very soft.
Mash the boiled sweet pumpkin with the skin on.
Add water and salt to the mashed pumpkin, then bring it to a boil while stirring.
If needed, add glutinous rice flour to adjust the thickness.
When it becomes thick, turn off the heat and serve in a bowl.