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.