Step 1

First make a pot of blue pea flower tea – let it steep until the colour is really an intense blue.

Step 2

Leave the tea to cool then freeze to make ice cubes. Once these are solid, crush them in a powerful blender until you have blue crushed ice. You can keep this in a jug in the freezer until you need to use it.

Step 3

Shake the cranberry juice, gin, St Germain and lemon juice in a cocktail shaker half filled with ice,

Step 4

Fill two glasses with ice cubes and then divide the cocktail between the glasses.

Step 5

Top with the blue crushed ice which will gradually turn purple as it melts!

Step 6

Place cocktail cherries (or blueberries!) inside fresh or tinned lychee to create the eyeballs and thread them on a cocktail stick to garnish.