Garnish: spear slices of cucumber with edible flowers and herbs (rosemary is pictured).
Shake first 3 ingredients in a cocktail shaker full of crushed ice, and strain into a cocktail glass.
Top up glass with chilled ginger ale, sparkling water, or champagne and garnish with cucumber herb slices. Note: Do not shake sparkling ingredients in the cocktail shaker – the carbonation creates a messy explosion!