HBTL and its village cooperatives lead the way in producing and marketing the only FSC, Organic and Wildlife Friendly certified essential oils in the world. The wild plants are harvested from responsibly managed forests by villagers, distilled by local communities and quality controlled and packaged by HBTL for sale to domestic and international markets.

Outlined below is the essential oil production process:

-Step 1: Harvesting of raw materials
Roots, rhizomes, leaves and aerial parts.

-Step 2: Cleaning, drying, and storing
Collectors do the preliminary cleaning and drying in the herb collection areas. Further cleaning and drying is done in the village.

-Step 3: Procuring and storing of the raw materials
The processing unit buys the raw materials from the collectors. While procuring the raw material, the unit pays the conservation premium to the concerned forest user group and market price rate to the collectors.

-Step 4: Cleaning, drying, and grading
The processing unit usually has to clean and dry the raw materials again. Cleaned and dried raw materials are graded to produce high quality essential oils.

-Step 5: Weighing, starting distillation process
The raw materials are weighed and put into the distillation apparatus evenly in several layers, to avoid channelization of steam.

-Step 6: Steam distillation
Water is filled into the bottom chamber of the distillation unit. Cold-water circulation is maintained around the condenser of the unit. Firewood is burned to heat the water in the chamber. The steam of the water takes up the essential oil of raw materials into the condenser pipe. In the condenser, the steam turns into liquid. The raw materials are distilled with low pressure and relatively dry steam for 8 to 20 hours depending on the nature of raw materials.

- Step 7: Collection in a filter jar
The condenser pipe brings the water and essential oils into the separating jar.

-Step 8: Separating oil from water:
Depending on the specific gravity of the essential oil, the oils will rise above or below water level. With the help of separating jar, the oil is obtained.

-Step 9: Filtering the oil
Residual water and unwanted particles are removed from oil.

-Step 10: Quality checking, packaging, and storing
The oil quality is checked and it is packaged and stored

Harvesting raw materials

Storing the raw materials

Cleaning and drying

Quality checking