After stirring very gently once. Leave it there for another 30 minutes with the lid off to cool it down. Best served the next day. For immediate consumption, you would reduce water to make it thicker. Otherwise pop it in the fridge and serve with coconut.
Use the liquid part of the coconut to dissolve the cornflour. Once the saucepan is boiling, add the mixture and continue stirring to ensure no clumps form. Add a pinch of vanilla crystals for flavour or pandan flavouring.