New Source of Booze: Used Coffee Grounds

Scientists cook, ferment, concentrate it
By Kate Seamons,  Newser Staff
Posted Aug 5, 2013 11:58 AM CDT
New Source of Booze: Used Coffee Grounds
coffee-making-at-revolver-20121003-6.jpg   (©)

Soon you may no longer have to choose between treating your hangover with coffee or the hair of the dog. Science reports that scientists have successfully spun used coffee grounds into booze, in a process that sounds relatively straightforward. They dried the spent grounds (which, in this case, came from a Portuguese roaster) then added water and cooked the mixture at 163°C for 45 minutes. The liquid was pulled out, dosed with sugar and yeast, and given time to ferment.

In order to make it boozier—read, 40% ethanol—the result was concentrated in a process Science likens to that of distilling spirits. But what would such a discovery be without a taste test? The eight "trained" testers who sampled it reported coffee aromas and a bitter taste. They thought age would actually improve it, but ranked it as palatable. (Smithsonian adds that the scientists described it "as having features of a pleasant beverage.") What it's not: Caffeinated. Most is eliminated as the drink is brewed. (More coffee stories.)

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