Cut the sweet potato into 4 pieces, Indian sweet potatoes have lot of long fibers running through them so it will be difficult to cut them into small pieces.
Either boil or steam them in a pressure cooker for 2 to 3 whistles.
It can also be baked in oven at 400 F for 40 to 45 minutes. Cover the sweet potato with a tin foil and poke holes in it and bake it.
After steaming or baking remove the skin and blend into a smooth puree in blender.
Add a pinch of cinnamon and mix well.
Serve lukewarm.