Ingredients:
500 gms. Shrimps, shelled and deveined (save the shells and tails for later use)
1 tsp rock salt
1 cup cold water
2 stalks lemon grass
1-inch ginger, peeled and sliced
6 small mushrooms, chopped
8-10 sprigs of coriander leaves
3 Jalapeno chillies
4 cups chicken stock
1&1/2 tbsp fish sauce
2 Limes