- For preparing chemmeen in coconut milk, first mix prawns, half of onion, 2 green chillies, ginger, garlic, turmeric powder and salt. 
- Cook the prawns with coconut milk. 
- When cooked, keep aside the prawns. 
- Heat a kadai and pour oil. 
- Fry the rest of the onion, green chillies and curry leaves. 
- Add cooked prawns, chilly powder and garam masala into it. 
- Make it a semi thick gravy. 
- Chemmeen in coconut milk is ready. Serve hot.