In a bowl, mix the Jelly Crystals and the boiling water until it is dissolved. Add the cold water and the evaporated milk and stir in the diced mango. Pour into a pudding mould or bowl and refrigerate overnight or until set. Once set you can either run hot water on the outside of the bowl to loosen the pudding and turn it onto a plate or just spoon it into individual bowls.
Ready in 15 min