For preparing the delicious dish, first De-vein the prawns and wash properly.
Take a pan and roast the grated coconut in 1/2 tsp oil.
Add shallots and aniseed to this. Roast until golden brown in color and remove from fire.
Grind to a smooth paste and keep aside.
Take a pan and fry the sliced onions until golden. Add green chillies, garlic and ginger. Fry for a few seconds.
Add chilly powder, coriander powder, turmeric powder and mango pieces.
Stir and add 1/2 cup of water, prawns and required salt. Cook till the prawns are done.
Mix the ground coconut mixture in some water and add to the curry. Boil and remove from fire.
Take a pan and pour oil. Splutter mustard seeds, fenugreek and curry leaves and add this to the curry.
Yummy chemmeen curry is ready and serve hot with rice.