Wash the skin of pumpkin.
Slice using a large knife, place face dow on a parchment lined baking pan.
Bake for 1 ½ hours or until you can easily pierce with a fork.
Allow to cool a bit before peeling the skin from the flesh. If unable to peel, simply scoop the flesh out.
Blend until completely smooth in a blender.
Drain puree over a cheesecloth or flour sack cloth for several hours or overnight.
Use immediately or place in an airtight container and store in the fridge.