First of all smash the 3 big boiled potatoes and put in a bowl then add in salt as per taste along with corn flour and mix well to make dough from it.
Now for making stuffing first of all take a mixer jar and add in roasted peanuts, sesame seeds, fennel seeds, cashew nuts, almonds and grind them coarsely then take out in a bowl.
Now add in boiled potatoes, salt, lemon juice, ginger chilli paste, powdered sugar, coriander leaves, raisins, dry coconut and mix all the ingredients well and make stuffing from it then make small balls from stuffing.
Now take little dough and roll out small like a puri then put one stuffing balls at centre and seal it nicely, make all the buff vadas ready this way then roll on tapkir flour or corn flour.
Now heat oil in a kadai, when oil gets heated put vada in oil for frying and fry till become light golden brown then take out in a serving plate and serve with jaggery tamarind chutney and enjoy.