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Home Brew Forums > Home Brewing Beer > Brew Science > How cold can you get Bud?
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Old 05-23-2011, 03:06 AM   #1
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Default How cold can you get Bud?

Alright, before I get any flack for asking this let me preference the question. My cousin is a Bud drinker and has always been one, he came to me with an idea and I didn't know the specific answer to his question, so I told him I would ask HBT cause someone will know.

He loves Bud, loves it cold, ice cold, so cold he wants it just above the freezing temp. Have you ever pulled a beer out of the fridge that was so cold that when you tipped the beer the neck froze, or just the neck of the beer was frozen but you could still drink the beer. That's what he is looking for.

He came to me with an idea for a beer and after much debate the simple answer was just to chill the beer just above the freezing point. He wants the set his beer fridge to that temp. I told him there are many variables, how full is the fridge, how often do you open the door, alcohol in the beer, ABV of the beer, and so on, and so on.

Here are the questions.
How cold can he get Bud?
Im not looking for 32 degrees because that's what water freezes at, is there a specific formula that will tell me the freezing point of a beer that is 5.5% alcohol?


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Old 05-23-2011, 03:13 AM   #2
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http://en.wikipedia.org/wiki/File:Ph...ter_s_l_en.svg

Above is the solid-liquid equilibrium graph for ethanol in water. Looks like around -2 degC, or 28.4 degF. There will be some additional freezing point depression from other solubles in beer, but I imagine this is pretty close.


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Old 05-23-2011, 07:15 PM   #3
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At the temp you are searching for, the beer will probably still be liquid in the bottle and won't crystallize until after you open it. Water (and beer) expand as they freeze, the pressure inside the bottle works to prevent it from crystallizing...until you open it and reduce that pressure to atmospheric.
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Old 05-23-2011, 07:21 PM   #4
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Old 05-23-2011, 08:25 PM   #5
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You might know this, but a way to get it super cold would be to put it in a cooler with tons of ice, then pour salt over the ice. that should get it colder than just ice.

But I have no scientific idea how cold bud can get.
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Old 05-23-2011, 08:42 PM   #6
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Freeze ice cubes with water that's lightly salted. It'll lower the freezing point and therefore lower the melting point. I think.

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Old 05-24-2011, 12:03 AM   #7
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Dry ice in a solution of rubbing alcohol gets down below -40 F. I think it gets to -70 F but my thermometer stopped at -40 F. Is that cold enough?

Seriously though, when I used to bartend we used to freeze thick 12 oz mugs to serve our BMC in. The beer was kept in the low thirties I think. When it hit the glass you'd get a beer slushy formed at the top.
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Old 05-24-2011, 12:10 AM   #8
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hell, I'd just pour the 'alocohol' OVER the ice, and drink THAT!
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Old 05-24-2011, 12:11 AM   #9
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I'll suggest that to him. I gotta keep him happy cause he's giving me his blown kegs! Single tier, fermentation chambers, new keggles. So far I'm making out like a bandit!
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Old 05-24-2011, 12:35 AM   #10
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@Irregular - I've had similar happen with a soda.... opened it up and it was liquid, took a sip or 2 and then it was slushy...


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