Grind coriander seeds, black pepper and ajwain into a coarse powder.
Grate the corn or coarsely ground with a grater.
Now add corn kernels green chilli, chopped onion, ginger paste, dry mango powder, grinded masala, amchur powder, salt, sugar, yogurt and coriander leaves. Mix well.
Add ¾ cup of besan and 2 tbsp rice flour. Stir well. If the batter is too thin then add a little more besan. The consistency of the batter should be medium.
Heat the oil in a pan on medium heat for deep frying.
Once hot drop a few pakoras at a time using your hand or two spoons.
After some time move them around for even browning.
Fry till it is golden brown from both sides.
Remove it to a wire rack using a slotted spoon.