Blanch curry leaves, then immediately dip in ice water. Repeat with the Habanero, in a fresh pot of water. Dry leaves and chilli on paper towels. Place all ingredients except tamarind in a blender and blend to a paste. Pass through a fine sieve. Combine tamarind paste with equal amounts water. Strain liquid and add to earlier paste. Adjust to taste.
To prepare pickled torch ginger flower:
Remove the white middle of the torch ginger flower, then vacuum pack the petals in some pickling liquid and marinate for a day.
To cook prawns:
Sift the rock salt to separate the larger from the finer. Use the larger for this recipe. Heat a wok and over medium heat, add salt followed by the prawns, stirring continuously until prawns are cooked.
To make lime essence:
Blend lime leaves and ice at high speed for 2 minutes. Strain the liquid through a fine cloth and set aside.
Spoon a dollop of chutney onto a side plate and top with coconut cubes, fish and ginger flower. In a deep serving dish, place stones and lime leaves. Tuck dry ice under stones, top with prawns and pour in lime essence to create a scented mist. Wait for prawns to be infused with mist before placing on assembled plate.