May 2018 Newsletter- Alcohol-free Preparations
May's 5 page newsletter looks at different herbal preparations that don't require the use of alcohol as a solvent or preservative.
Excerpt: "In Egypt, as early as 2600 BC, the first extraction of aromatic compounds from plants was performed over a fire upon which was set a clay vessel containing water and aromatic herbs. Above the vessel hung a sheepskin. As the fire heated the water, the volatile oils were released from the plants and carried up with the steam to the sheepskin, where the molecules were caught in the wool. After allowing this process to continue for some time, the sheepskin was wrung out, yielding an aromatic liquid. This was the earliest known method of distillation."