Peppermint Spirits Essential Oil 4 oz by Herb PharmWe prepare our Peppermint Spirits from the dried leaves and the aromatic essential oil of Mentha piperita plants which are Certified Organically Grown without the use of chemical fertilizers, pesticides or herbicides. The leaves are harvested when the plants are starting to flower, are carefully shade dried, and then promptly extracted. The essential oil is steam distilled (solvents are never used) from the fresh (undried) flowering tops. These