01 - In a small saucepan, mix the granulated sugar and water.
02 - Heat the mixture over medium heat, stirring occasionally, until the sugar fully dissolves, about 3 to 4 minutes.
03 - Remove from the heat and allow the syrup to cool for 2 to 3 minutes.
04 - Stir in the pure peppermint extract evenly into the syrup.
05 - Let the syrup cool completely to room temperature.
06 - Transfer the syrup into a clean, airtight bottle or jar and refrigerate for up to 1 month.