Remove the skin and seeds from the old pumpkin and cut it into appropriate sizes.
Place the cut pumpkin in a steamer and steam for 20-30 minutes until cooked.
Transfer the cooked pumpkin to a bowl and mash it finely.
Put the mashed pumpkin and water in a pot and simmer over medium-low heat.
When the porridge thickens, add boiled glutinous rice flour and stir well.
Add allulose and adjust sweetness to your taste.
Simmer on low heat for about 5 more minutes and season lightly with salt.
Serve the finished porridge in a bowl.