Mix the fish fillets with all the ingredients except the chickpea flour (Besan).
Let them marinate for 20 minutes.
After 20 minutes add the Chickpea flour and mix very carefully to coat every piece.
Put a pan with plenty of oil over medium-high heat.
When the oil is hot enough, add the marinated fish cubes and fry them until they are crispy and golden.
Serve them hot with the yoghurt sauce or Mint Chutney.