Step 1.
- Chill a martini glass by placing it in the freezer or filling it with ice water.
Step 2.
- In a cocktail shaker, add the cucumber slices and elderflower liqueur, and muddle gently to release the cucumber's essence.
Step 3.
- Add the vodka and ice to the shaker, and shake vigorously for about 15 seconds.
Step 4.
- Strain the mixture into the chilled martini glass.
Step 5.
- Garnish with a cucumber ribbon.