In a bowl, break the egg, add the sweetener and the salt.
Blend with a fork, until the sweetener mixes with the egg. Add the vanilla extract and beat some more.
While you are beating the egg, pour the coconut milk in a pan, and heat on medium heat. Do not let it boil, just heat till it simmers.
Now with one hand pour the coconut milk in the egg, and keep stirring with the other hand. This is very important or else the egg will scramble.
Once the coconut milk is mixed well, add the desiccated coconut, and stir for another minute.
Sprinkle the cardamom powder on the top.
In a baking dish, pour very hot water, and place the custard bowl in it.
Bake at 350 degrees for 35 minutes, or at 250 degrees for forty-five minutes
Once it stops baking, check by sliding a knife inside the custard. If it comes out clean, it is done.
You can now either test your patience and eat when it is cold, or devour it while it is still hot.
Come to think of it, I will try making a chocolate custard next time.