A popular Halloween dish!
Make the custard from the mix up with the milk/water until slightly thinner than usual.
Mash up the mint leaves with a mortar and pestle.
Add the mint leaves and food dye to the runny custard.
Place in the fridge for at least 30 minutes, until almost solid and emerald green.
Tip: Pour over a dry sponge cake, and it will soften up the cake a treat.