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Old 08-05-2013, 05:12 PM   #1
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Scientists make beer from coffee grounds....

ScienceShot: A Shot of Coffee That Gets You Drunk | Science/AAAS | News

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To answer this call, some scientists examined the potential of used coffee grounds. The scientists first collected this raw material from a Portuguese coffee roasting company and dried it. Then they heated the powder in water at 163°C for 45 minutes, separated out the liquid, and added sugar. Next, the team mixed in yeast cells, let the concoction ferment, and concentrated the sample to get a higher alcohol content. (A similar process is used to produce other distilled beverages such as whiskey and rum from wheat and molasses.) And voilà! Used coffee grounds produced a new alcoholic beverage with 40% ethanol, comparable to other hard liquor such as vodka and tequila, researchers will report in the September issue of LWT - Food Science and Technology.

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Old 08-06-2013, 01:53 AM   #2
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Now that is interesting!
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Old 08-06-2013, 03:28 AM   #3
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Well that certainly beats the beer made from the yeast found in a brewmaster's beard. Beard Beer: Rogue Ales Creates Brew Out Of Yeast From Brewmaster John Maier's Facial Hair
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Old 08-06-2013, 03:42 PM   #4
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Originally Posted by kleenex View Post
To answer this call, some scientists examined the potential of used coffee grounds. The scientists first collected this raw material from a Portuguese coffee roasting company and dried it. Then they heated the powder in water at 163°C for 45 minutes, separated out the liquid, and added sugar. Next, the team mixed in yeast cells, let the concoction ferment, and concentrated the sample to get a higher alcohol content. (A similar process is used to produce other distilled beverages such as whiskey and rum from wheat and molasses.) And voilà! Used coffee grounds produced a new alcoholic beverage with 40% ethanol, comparable to other hard liquor such as vodka and tequila, researchers will report in the September issue of LWT - Food Science and Technology.
I don't understand the excitement. First of all, why coffee grounds? It seems to me all they are doing is adding sugar, and you can use this same technique to ferment almost anything, including insects, grass clippings, or old gym socks, if you like. The key to fermentation is not in the coffee grounds, it's in the sugar, which is what yeast metabolize to create ethanol.

We have a saying among my winemaking friends: just because you CAN ferment something, doesn't mean you SHOULD.
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Old 08-06-2013, 04:31 PM   #5
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Not sure if it oughta be called beer ....80 proof beer is mighty powerful stuff.
'Course, I could be wrong...Seems like I recall that the Sam Adams brewery produced a high alcohol beer some time ago. Can't remember the alcohol content, though
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Old 08-06-2013, 04:45 PM   #6
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Good grief! Next thing you know they'll be making fake hamburger out of eyes of newts or cow stem cells.

(I know - the subject has already been broached in another thread.)
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Old 08-06-2013, 05:28 PM   #7
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Not sure if it oughta be called beer ....80 proof beer is mighty powerful stuff.
'Course, I could be wrong...Seems like I recall that the Sam Adams brewery produced a high alcohol beer some time ago. Can't remember the alcohol content, though
it is a get drunk quick booze...
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