01 - Rinse and gently pat dry the peppermint leaves. Lightly bruise them with your hands to release their oils.
02 - Combine the peppermint leaves with vodka in a clean jar or bottle. Seal tightly and store in a cool, dark place for 5 to 7 days, shaking gently once daily.
03 - After infusion, strain the mixture through a fine mesh sieve or cheesecloth to remove the peppermint leaves.
04 - In a saucepan, heat sugar and water over medium heat, stirring until the sugar fully dissolves. Remove from heat and allow to cool to room temperature.
05 - Mix the cooled syrup with the infused vodka. Stir in peppermint extract if using, and add green food coloring for color.
06 - Pour the cordial into a sterilized bottle and seal. Let rest for 2 to 3 days before serving to develop flavor.