Mix the prawns with the saffron/kunyit powder and a bit of salt.
Heat oil and when heated, fry the prawns until pink or half cooked before removing.
Into the same pot, add the blended ingredients and cook until the oil floats.
Add 1/2 litre of water and let the gravy simmer to a boiling point. Put in the fried prawns, curry leaves and salt to taste.
Mix all in and after one more boil, remove from heat.