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Old 11-05-2012, 05:22 PM   #1
malky1841
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Default Why is my brew never as strong as it says on the box?

I've just barrelled my 3rd brew, a donner and blitzed Xmas brew by milestone. This had some pretty in depth instructions with it unlike the other woodfordes kits I've made.
These said my starting gravity should be 1.040 at around 18-25 degrees, mine was 1.042???. My final gravity said it should be .009 but mine was 1.14. How come ?

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Old 11-05-2012, 05:26 PM   #2
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Sorry for some reason my app won't show me more than one paragraph at a time so I can't see what I'm typing!. Re cap final gravity should have been 1.009 but mine was 1.014, despite mixing with a paddle on the 6th day of fermenting. My fermenting temp was 18 degrees all the way through.

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Old 11-05-2012, 05:26 PM   #3
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Different efficiencies, Mash temps (If all grain, temps lower than 152 produce more fermentable sugars than temps over 152), yeast pitch rates, attenuation (stated vs actual), and fermentation temps.

These are jut some of the things that could cause differences.

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Old 11-05-2012, 05:50 PM   #4
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This was a premium 2 tin kit that neede no extra sugar apart from the spray malt I added when I kegged it. So should I make the temp of the wort before pitching the yeast closer to the 18 degree mark than the 25 degrees the scale on the instructions states?

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Old 11-05-2012, 06:20 PM   #5
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Extract beer sometimes finishes with a higher than desired FG. These threads discuss the 1.020 curse:
http://www.homebrewtalk.com/f39/fg-quite-high-324462/
http://www.homebrewtalk.com/f163/fer...length-351457/

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Old 11-05-2012, 06:23 PM   #6
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You can try warming it to 20-22 during the last 1/3 of fermentation. There will be some variability in numbers just based on extract quality and yeast health/type. Your attenuation was about 66%, so maybe a little more time and increasing the temps a bit to help it finish.

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Old 11-05-2012, 08:48 PM   #7
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Hmm ok something to know for next time I guess. Thanks folks. If I do another gravity test after final fermentation at Xmas time when the beers ready to drink, will the carbonation in the beer give false results and if it makes any difference will i be cheating myself? lol.

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Old 11-05-2012, 08:53 PM   #8
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For the future: DO NOT SWIRL YOUR BEER WITH YOUR PADDLE after fermentation has started or nears completion. You could be increasing the possibility of infection or oxidizing your beer

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Old 11-06-2012, 04:43 AM   #9
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Did you prime the yeast with O2? 18C how do I convert this? (18X1.8)+32? Crap, I gotta find a calculator. I'm guessing 66F? And it would seem your kit said 18-25C and your were at the low end of this. Colder = lazy yeast. For a small beer like this higher temps may help it finish. And IMHO don't stir the beer anymore just adds O2.

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Old 11-06-2012, 05:56 AM   #10
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Prime the yeast with O2? This is only my third brew, I was led to believe it was easy as long as you followed the instructions and didn't mess with the recipe but it seems I need to know a hell of a lot more about (attenuation rates?) yeast types , pitch temp when to make it warmer when to make it cooler ect. Ill prob have to go to night class!

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