For preparing chemmeen puttu, cook prawns with little water in a china dish by continuous stirring.
Heat coconut oil in a vessel. Fry onions, curry leaves, coriander leaves, green chillies, ginger, garlic, garam masala, turmeric powder, coriander powder, chilly powder and salt. Mix it well.
Then add the cooked prawns to it and stir well. Remove from flame and keep it aside.
Then mix rice flour and salt. Wet it by sprinkling water to make the puttu mixture.
Put the prawn masala instead of adding coconut in the middle of the steam cake and cook in a puttu maker.
Steam till done and remove from flame.
Chemmeen puttu, a nadan nutritious recipe, is ready. Serve hot.