Fristly,heat oil in a pan,once oil hot.add mustard seeds and curry leaves.add onion,green chilli chopped saute for few minutes.add greated coconut and turmeric,red chilli powder and salt,sugar saute it.
Now add boiled mashed potatoes and mix it well add lemon juice saute it in medium flame.now potato stuffinh is ready keep it aside and cool down them.and after 10 minutes make a small ball size bondas.
Make batter,in a bow take basan,purpose flour,cornflour,turmeric powder,red chilli powder,salt and chopped curry leaves and water mix it well make a thick batter,now batter is completly ready.
Heat oil in a pan,once oil hot take basan batter dip one by one bonda balls in the batter.and dreep in the hot oil and deep fry until gloden brown.and drain them on a kitchen tissue paper.
Serve Aloo Bonda with sauce and green peanut chutney.