Dry roast the coconut with shell in the gas stove, by carefully placing it on the flame
Turn it around with a tong till golden brown in colour
When it cools down, remove from shell and make slices of the roasted coconut
Alternatively, you can roast fresh coconut slices in a frying pan and sauté until light brown at medium heat
Fry the dry red chillies till they are crispy
When the chillies & coconut cools down, grind it together with shallots, ginger, curry leaves, tamarind and salt
Sprinkle little water if needed
Voila,Chammanthi is ready