
Alcohol was fully purified for the first time by Muslim chemists in the 8th and 9th centuries. The development of the still with cooled collector—necessary for the efficient distillation of spirits without freezing—was an invention of Muslim alchemists during this time. In particular, Geber (Jabir Ibn Hayyan, 721–815) invented the alembic still; he observed that heated wine from this still released a flammable vapor, which he described as "of little use, but of great importance to science". Not much later Al-Razi (864–930) described the distillation of alcohol and its use in medicine. By that time, distilled spirits had become fairly popular beverages: the poet Abu Nuwas (d. 813) describes a wine that "has the colour of rain-water but is as hot inside the ribs as a burning firebrand". The terms "alembic" and "alcohol", and possibly the metaphors "spirit" and aqua vitæ ("life-water") for the distilled product, can be traced to Arabic alchemy.[1]