Add 1 cup of water and 1 cup of granulated sugar into a small saucepan. Stir to combine.

Place the saucepan over medium heat and stir often. Continue until the sugar fully dissolves and the mixture reaches a gentle simmer.

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

Once cooled, pour the syrup into a clean jar or bottle with a tight-fitting lid. Store in the refrigerator for up to 1 month.