Boil or steam the potatoes until they are soft and can be easily mashed. Once it cools down, mash them and add salt, corn starch 1 tbsp at a time. Leave it aside. (If you are fasting then please use tapioca starch).
While its cooling, make the stuffing. In a food processor- add chopped green chilies, give it a few pulses to break down the chilies, then add shredded coconut, sesame seeds, half a boiled potato. Give it few pulses, don’t make a paste. Just bring it together. Remove the mixture and add ground peanuts, cashews, raisins, salt, sugar, lemon juice and cilantro.
Divide the potato mix into equal rounds or balls. Take it on greases palm, flatten it out with the help of your palms into a disc or create a little well in the middle. Add the stuffing and seal the patty into circle or flattened out disc shape again.
Make sure the stuffing is sealed or else it will come out while frying and spoil the oil. Roll the patties into corn starch just lightly to coat it them on all sides.
Deep fry them or shallow fry them until they are crispy on all sides on medium heat.
Remove them on absorbent paper towel and serve them warm with tamarind or cilantro chutney, ketchup or seasoned yogurt.