In a cocktail shaker, muddle the cucumber slices with the simple syrup.
Add the Flatley Whiskey, elderflower liqueur, and lemon juice to the shaker.
Fill the shaker with ice cubes
Shake the mixture vigorously for about 10-15 seconds to chill and infuse the flavours.
Take a rocks glass and place a cucumber ribbon inside, letting it drape along the sides.
Fill the rocks glass with fresh ice cubes.
Strain the cocktail from the shaker into the rocks glass.
Optionally, garnish the cocktail with a cucumber slice or a twist of lemon.
Serve and enjoy your refreshing Day Dreamer cocktail!