Peel the old pumpkin, remove the seeds, and chop it finely.
Wash the brown rice thoroughly and soak it in water.
Blend the chopped old pumpkin and soaked brown rice in a blender to make a batter.
Add a little salt and sugar to the batter to season.
Pour the batter into a rice cake mold and flatten it evenly.
Boil water in a steamer, place the mold inside, and steam for 40 minutes.
Let it cool, then cut into bite-sized pieces.