Chop and blend the coconut in water until fine. Strain the coconut and retain the liquid for the recipe.
Stir together coconut milk, condense milk, and evaporated milk. Stir, well, the custard into the milk. Stir in the mixed essence, salt and brown sugar to taste.
Strain the custard and milk mixture. Pour into 1/2 lb clear bags and tie securely. Store in the refrigerator until frozen.