Combine the water, sugar, and mint leaves in a small saucepan over medium heat. Bring to a boil, stirring until the sugar dissolves. Cook for 1 minute.

Remove the mixture from the heat and let sit for 30 minutes.

Pour the mixture through a fine mesh sieve and into a heat-safe bowl.

Cover with plastic wrap and let cool in the refrigerator until it reaches room temperature.

Transfer unused mint syrup to an airtight container and store in the refrigerator for up to a month.

For each Mint Julep, fill a highball glass with ice. Pour ½ cup of the lemonade and ½ cup of the club soda into the glass. Add 2 tablespoons of the mint syrup and stir to combine.

Skewer two cherries and one mint leaf with a decorative skewer or toothpick. Add one skewer to each drink as a garnish.