In a blender, combine the cucumber slices and fresh ginger.
Blend until smooth, then strain the mixture into a pitcher.
Stir in honey or agave syrup and fresh lime juice to add sweetness and zing.
Fill a glass with ice cubes and pour the cucumber ginger mixture until it's about two-thirds full.
Top it up with sparkling water or tonic water.
Garnish with cucumber ribbons and ginger slices for an elegant touch.
Enjoy the cool and invigorating Cucumber Ginger Fizz!