01 - Gently bruise the peppermint leaves using a rolling pin or mortar and pestle to release their oils.
02 - Place the bruised leaves into a clean, dry glass jar.
03 - Pour the neutral oil over the peppermint leaves, ensuring they are fully submerged.
04 - Seal the jar tightly and store it in a cool, dark place for 5 to 7 days, shaking gently once daily.
05 - After infusion, strain the oil through a fine mesh sieve or cheesecloth into a sterilized bottle, discarding the leaves.
06 - Keep the peppermint oil in a sealed bottle refrigerated for up to 2 months.