Patchouli vintage (Dark) Pogostemon cablin

FAMILY: Lamiaceae (ex Labiate)
Scientific name: Pogostemon cablin
Origin of product: Indonesia
Portion of the plant: leafs

The difference of this variety is a very deep and complex aroma, the difference in production is still in the dark to me, but it seems that an iron container is being cured where oxidation interacts in the transformation of this fascinating product.