To make stuffing, combine coconut, cashewnuts, peanuts, raisins, rock salt, sugar, lemon juice, ginger-green chilli paste and chopped coriander in a bowl and mix well.
Heat sufficient oil in a kadai.
Combine potatoes, arrowroot powder and rock salt in another bowl and mix well.
Grease your palms with some oil. Spread some arrowroot powder on a plate.
Divide the potato mixture into equal portions, make a dent in the centre and fill it with a portion of the stuffing. Coat with arrowroot powder.
Deep-fry pattice in hot oil till golden and crisp. Drain on absorbent paper.