Add the mint leaves and the cucumber-infused vodka to a cocktail shaker.
Gently muddle the leaves with a muddler or a wooden spoon.
Add ice, green tea, and lemon juice to the cocktail shaker.
Shake well. Strain into a lowball glass filled with ice.
Top off the rest of the glass with tonic water.
Garnish with a cucumber slice and additional mint.
Notes
*To learn how to make your own cucumber-infused vodka, check out the step-by-step process written in the body of this post.**Casey's original recipe calls for club soda, but tonic also works well.
Keyword club soda, cucumber, cucumber-infused vodka, green tea, lemon, lemon juice, mint, tonic, vodka