Grilled Giant Fresh Water Prawns with Green Chilli Dressing

Ingredients

¼ cup Green Chilli Finely Minced
¼ cup Cilantro Finely Minced
1  clove Garlic Finely Minced
2 tbsp Lime Juice
3 tbsp Water
1 ½ tbsp Fish Sauce

Preparation

1. With a scissor, cut the front tentacles and long legs on the  prawn head and the short back legs. Cut open the prawn by cutting the shells  on the belly of the prawn starting from the head and all the way through to  the tail. Once it is through, use your hands to flare open the prawn to  expose the meat and head matter. Scoop out the prawn head butter (yellow  stuff) into a bowl and set aside. Clean out the brown/black sack found in the  back of the head and pull out the vein that runs through the back of the  prawn. Rinse the prawn under water.  
2. Scoop the prawn head butter back into the prawn head    On medium low heat, place the prawns shell down on the grill and cook until  the meat is no longer translucent and then heat butter begins to simmer about  5-8 min.    
3. In a blender, Add green chilli, cilantro, garlic, lime juice, water and  fish sauce. Blend until all herbs are finely chopped.    Serve prawns and sauced.