In a small saucepan, combine the water, sugar, and mint leaves.

Bring the mixture to a boil over medium heat, stirring constantly until the sugar dissolves.

Reduce the heat and let the mixture simmer for 5 minutes, allowing the mint to infuse into the syrup.

Remove the pan from the heat and let the syrup cool to room temperature.

Strain the syrup through a fine mesh sieve or cheesecloth to remove the mint leaves.

Pour the syrup into a sterilized mason jar or glass bottle and refrigerate until ready to use.