Step 1

Peel the cucumber, reserving a little of the peel to use as a garnish if you wish. Chop the cucumber into large pieces.

Step 2

Add the cucumber pieces, mint leaves and elderflower cordial to a blender. Blend to a puree.

Step 3

Strain the mixture using a cocktail strainer into your glasses, or alternatively place a fine mesh sieve over a bowl and strain the mixture that way. Discard the pulp in the sieve and pour the cucumber liquid evenly into your glasses.

Step 4

Top with ice, then pour on sparkling water. Garnish with fresh mint leaves to preference, and serve immediately.