01 - Lightly bruise the peppermint leaves by rolling them between your fingers to release their oils.
02 - Transfer the bruised leaves into a clean glass jar with a tight-fitting lid.
03 - Pour the vodka over the leaves, ensuring they are fully submerged.
04 - Seal the jar tightly and store in a cool, dark place for four weeks.
05 - Gently shake the jar every few days to agitate the mixture.
06 - After four weeks, strain the liquid through a fine mesh sieve or cheesecloth into a clean bottle, discarding the peppermint leaves.
07 - Seal the bottle and keep the peppermint extract in a cool, dark place until use.