First, peel and grate the sweet potato..

Add flour to it little by little and mix without moisture....

Transfer it to a mixer jar and grind it like puttu batter.. Maybe if it is wet while grinding then adding little flour and grinding will be fine..

To make puttu take a puttu kudam first put coconut in it then add flour again put coconut again add flour finally put some coconut and cover it.. cook well..

Although we don't have the vessel to boil it, we can boil it in a coconut shell...

Now the puttu is ready and if you eat it with palm jaggery it will be very delicious..