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Home Brew Forums > Home Brewing Beer > General Beer Discussion > Boiling with finished beer instead of water
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Old 08-21-2012, 11:20 PM   #11
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You aren't the first person to think of this, or even try it. The idea has been around for at least the 15 years I've been brewing. The one person I know of who tried it said that the results ranged fron terrible to weird. Try it yourself if you like.

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Old 08-21-2012, 11:43 PM   #12
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Do it. I say do it. Could be realy good. Try a small batch and see.

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Old 08-21-2012, 11:56 PM   #13
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It would cause a time dilation paradox in subspace resulting in anti-mater particles entering our universe uncontrolled and ultimately end up in a total mater/anti-mater annihilation of the whole universe.
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Old 08-22-2012, 12:08 AM   #14
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Originally Posted by Soma
Green Flash's 'PALATE WRECKER' double IPA is brewed this way I believe.
They are using hopped wort to mash, not fermented, boiled beer.
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Old 08-22-2012, 12:14 AM   #15
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Originally Posted by david_42 View Post
I can't think of a worse use of beer. I'd rate using it for snail bait higher. All that will carry over is the bitterness, unfermentable sugars, and the color. Hop flavor, aroma and alcohol will boil off. Unfermentable sugars will further caramelize. Utilization and subsequent IBUs will be impossible to calculate. Instead of having two batches of drinkable beer, you'll have some horrible sludge.

But, it's your time, your money, and your beer. Have fun.
You know this from personal experience? I agree with the OP that it could possibly be used to re-purpose a beer that might otherwise get dumped. Further caremelization of unfermentable sugars might provide a more interesting flavor profile. Assuming the batch size of the original beer and the beer being brewed were the same, bitterness could easily be calculated by adding on the IBU from the original beer (hop bitterness doesn't get boiled off) to that of the new beer with utilization being a function of boil gravity. You'd have to do it on the fly after you take your boil gravity reading, but it could be done.

I agree with your point that the hop flavor, hop aroma and alcohol will get boiled off, but if a brewer chose to do something like this, they would be accepting these as justifiable casualties.

Also, I just want to make it clear that I am not saying you are wrong, I just don't think you are necessarily right, either. I'll be interested to see how this turns out if the OP (or anyone else for that matter) gives it a shot.
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Old 08-22-2012, 12:37 AM   #16
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Here is a write up of an attempt at this.
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Old 08-22-2012, 02:11 AM   #17
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Wow, BMC even. It's all been done before. See, this is exactly how things like mad cow disease get started.

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