What You Need to Know
In pre-modern chemistry and alchemy, cohobation was the process of repeated distillation of the same matter, with the liquid drawn from it ; that liquid being poured again and again upon the matter left at the bottom of the vessel. Cohobation is a kind of circulation, only differing from it in this, that the liquid is drawn off in cohobation, as in common distillation, and thrown back again; whereas in circulation, it rises and falls in the same vessel, without ever being drawn out.
Steps
- 1.
Aqua vitae production (Medieval Europe): Concentrating herbal essences for medicinal spirits
- 2.
Rosewater refinement (Persian cuisine): Intensifying floral aromas through multiple distillations
- 3.
Sake kasu shochu (Japanese distillation): Extracting maximum flavor from sake lees
The Science
Primary Reaction
Separation of ethanol from water