What you need:
1 part Elderflower syrup
3 parts Prosecco or any brut sparkling wine (non-sweet)
How to make it:
Place ice cubes in a large wine glass.
Gently muddle the mint, either using a pestle or your fingertips and add to the glass.
Add 1 part elderflower syrup followed up by 3 parts Prosecco.
Add a straw and ENJOY!