Blend coconut water and cream in a blender.
You could either blend smooth or blitz for a few seconds so that some of the cream pieces are blended, while some are not.
Add agar agar to water, stir and place it on fire.
Keep stirring till agar agar is dissolved.
Add sugar, stir and boil till sugar is completely dissolved.
Add the coconut mix.
Pour over the mango jelly, which would be set by now.
Make sure the jelly is set, while pouring be gentle, and pour over a spoon so that the heat from the milk is slightly transferred.
Let the coconut layer set.
Refrigerate for a few hours.
Once done it can be cut into the desired shape and garnished.