Put the mango into a blender and make it as puree.
Add water in a sauce pan, under medium heat. Then add in water and cook until dissolved. Add in coconut milk, mix well.
Add extra 40ml water with gelatine powder, then put in a bowl of hot water to dissolve it.
Add gelatine into mango puree, mix well, then add in coconut milk mixture. Pour into containers and chill for at least 4 hours. Enjoy!