In a sturdy glass, combine the kiwi slices, lime wedges, mint leaves, and sugar.

Use a muddler or the back of a spoon to gently press the ingredients together until the lime and kiwi release their juices and the mint is aromatic.

Pour the white rum over the muddled mixture. This helps to lift off all the flavors stuck at the bottom of the glass.

Fill the glass with ice cubes to the top.

Pour club soda over the ice until the glass is full. Stir well to mix all the ingredients.

Garnish with a sprig of mint or a slice of kiwi on the rim of the glass.