Peel the pumpkin and wash it in clear water and grate it with the grater.In a bowl, put the coconut milk, grated pumpkin, salt, palm sugar, rice flour and mix all the ingredients.Then, pack everything in banana leaves, a piece is 35g. Steam for 20 minutes with boiling water. After getting out of the steam, leave in the fridge.Finally, open the banana leaf and enjoy.