Alcohol Content: Why So Low? - Home Brew Forums
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Old 03-16-2009, 04:44 AM   #1
t-bag
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Mar 2009
southern california
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I just brewed my first batch of english pale ale and first id like to say that i bought a recipe kit that had everything i needed and all the directions plain as day. it started fermenting within 24 hours after pitching and only lasted 2 days. i checked the gravity then and again after a week and it was the same so i bottled it. but the alcohol content is lower than what the kit says it should be. The starting O.G. is 35 and end gravity is 11 so ABV% is 3. this kit says it should be between 4% and 4.5% Why is my beer so low in alcohol content not that it matters much i just want to know if i did something wrong or if its just something that happens???



 
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Old 03-16-2009, 05:03 AM   #2
RCCOLA
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At what temperature did you check your starting gravity?If it was hot then your gravity would read low.Also(next time) check your gravity after aerating to make sure it is fully mixed.




 
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Old 03-17-2009, 03:26 AM   #3
t-bag
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Mar 2009
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i used a hydrometer test jar so i took the sample from the spigot after i added cold water to make the temperature of the wort 75 degrees. should i have stirred the wort after adding water?

 
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Old 03-17-2009, 03:30 AM   #4
arover
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Mar 2009
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The kit directions often never mention aerating. After adding the extra water to meet the 5 gallons when I'm brewing (the 2 times I have), I dump the water back and forth several times between the kettle and the fermenter to aerate, then take my OG reading.

 
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Old 03-17-2009, 03:30 AM   #5
nibiyabi
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Feb 2009
Santa Clara University
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Quote:
Originally Posted by t-bag View Post
i used a hydrometer test jar so i took the sample from the spigot after i added cold water to make the temperature of the wort 75 degrees. should i have stirred the wort after adding water?
Yup. The water is lower gravity than the wort so if the wort is not fully mixed you will get an artificially low reading.
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Old 03-17-2009, 03:31 AM   #6
aubrey
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Yes, mix thoroughly before taking the OG reading. Otherwise you usually pull a dilute sample and thus read too low. With extract, its hard to miss the OG that the kit says you should get.
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Old 03-17-2009, 03:33 AM   #7
woollybugger2
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so your ABV may be higher than you think!
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Old 03-17-2009, 03:35 AM   #8
arover
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I'm curious, what does the kit say the OG should be?

 
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Old 03-17-2009, 03:58 AM   #9
t-bag
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Mar 2009
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Quote:
Originally Posted by arover View Post
I'm curious, what does the kit say the OG should be?
the kit said the o.g. should be between 35 and 45 but if you do the math like i did the o.g. should be roughly 43. the kit didnt mention aything about mixing thoroughly but it makes sense i thought aeration was supposed to be bad for the beer

 
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Old 03-17-2009, 04:04 AM   #10
arover
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If I understand it correctly, you aerate before primary fermentation to give the yeast plenty of O2 to go off of (initially). Any oxygen after you start the fermentation...no good. You should check out Palmer's How to Brew or the Joy of Homebrewing--I read their beginner processes thoroughly and mixed them in with the kit directions. Kit directions aren't always the best.



 
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