- 1 lime, quartered
- 2 sprigs fresh mint leaves
- 1 tablespoon white sugar
- 2 slices cucumber
- 6 cubes ice, or as needed
- 2 ounces white rum (such as Bacardi®)
- 4 fluid ounces club soda
- Squeeze the lime quarters into a highball glass, and drop the limes into the glass. Add the mint leaves and sugar. Muddle well with the back of a spoon or with a muddler. Place the cucumber slices into the glass, and fill with ice cubes. Pour in the rum, then top off with club soda. Stir gently and serve.