Clean and de-shell the prawns.
Marinate for 30 Min's by applying turmeric powder, chilly powder and 2 pinches of salt.
For the sauce, grind together coriander leaves and green chilly. Add to it ginger-garlic paste and pepper powder. Add a pinch of salt. To this add egg white and make a paste.
Add the prawns to this sauce and let them again marinate in this sauce for 15 Min's. Prick a toothpick in the prawn.
Keep the high rack in the microwave and pre-heat in grill mode for 2 Min's at 180C.
After pre-heating, arrange the marinated prawns on the rack and grill for 10 Min's. Then turn them to the other side and again grill them for another 10 Min's.