Start by peeling and juicing the cucumber. You want 6 cl per serving.
In a high ball glass, put the mint leaves, the lime and the sugar. Crush gently with a pestle.
Add the French Rum and cucumber juice.
Fill the glass with ice and top it up with sparkling water
Garnish with fresh mint and enjoy with a reusable straw
Thinly slice a mini cucumber and stick the slide inside the glass before adding the ice and sparkling water.