Place the water and cream into a medium sized mixing bowl and stir until the mixture is smooth. Add the remaining ingredients, except for the chia seeds, in the order listed, stirring between each addition.
Once the mixture is well combined add the chia seeds and mix to combine.
Stir every minute or so for five minutes as the mixture begins to thicken.
Pour the mixture over the base.
Place in the fridge for several hours or overnight to set.