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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Wyeast 1968 - Does it need agitation?
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Old 08-11-2008, 02:56 AM   #1
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Default Wyeast 1968 - Does it need agitation?

Does this yeast need to be agitated about every other day, almost guaranteed? Or should I take a wait and see attitude? If the latter, what am I looking for that would indicate the need for an agitation? Thanks for any help!


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Old 08-11-2008, 06:33 AM   #2
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You mean like swirrelled to make sure it's active? I've never heard of that. It does look sensitive, with a low attenuation, but WYeast says:

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Diacetyl production is noticeable and a thorough rest is necessary. Yeast traps trub easily and autolysis during storage is accelaerated. A very good cask conditioned ale strain due to rapid and complete flocculation. Brilliantly bright beers are easily achieved without any filtration.
Looks like an interesting cookie to say the least. But I don't know about the agitation.


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Old 08-11-2008, 12:00 PM   #3
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I used to use Wyeast #1768 "Special Bitter" for my ESB, but they apparently don't make it anymore, so I tried the #1968 on my last batch. This may be coincidence, but my batch stopped a few points short of the target FG and needless to say had a residual sweetness that threw the recipe out of whack.

As far as agitation, I'd refrain from doing it and especially every other day. I'd ferment a little warmer instead and start with a big starter.

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Old 08-11-2008, 04:00 PM   #4
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It's bubbling away this morning, about 12 hours after pitch. I'm going to ferment this at about 72-74, and let it go. I started at about 1.043, right on target, I'm hoping to get to 1.010, for a 4.2% ABV. We'll see, thanks!
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Old 08-11-2008, 10:07 PM   #5
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I use it for many of my English style beers. It is as advertized, low attenuation (67-71%)and a flocculating demon - looks like cottage cheese. I'd be suprised if you get your FG down to 1.010.

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Old 08-11-2008, 11:42 PM   #6
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I have used this yeast quite a bit, and if you want it to ferment out completely, some agitation will help a bit. Fermenting on the warm side early in fermentation is a bad idea, because it does create some significant esters (and fusels, if really hot -- found that out the hard way). Keeping it warm later in fermentation should be fine.

I like this yeast for English beers that I intend to keg because it is amazingly flocculant. That's a downside, too, because it leads to lower attenuation -- not so bad if you are aware of it. Overall, I love this yeast for English beers, and it has replaced 1028 London Ale as my yeast of choice for this style of beer.

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Old 08-12-2008, 12:35 AM   #7
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It's been at about 70 for the first 24 hours, and bubbling happily. I'll wait and see how it's going tomorrow, and maybe give it a swirl if needed. I'm excited to see how this beer turns out, it's impossible to find a best bitter in the D/FW area of Texas without a 2 hour drive...
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Old 08-12-2008, 03:18 AM   #8
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I would definitely agitate this strain. It flocculates like crazy and will definitely fall out before it's done eating everything. I would wait until initial fermentation starts to slow down, probably day 3 or so, then gently rock the carboy twice a day for another 4 days. That's what I do with 1099 which behaves similarly.
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Old 09-14-2009, 07:22 PM   #9
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I just pitched this strain in my esb yesterday afternoon. This morning, there was still no noticeable signs of fermentation. Granted that at 65 degrees, I'm on the coolish end of the range of temperatures wyeast said this yeast can ferment at. Should I be worried or is this strain a slow starter?
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Old 09-15-2009, 05:25 PM   #10
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Ok, I was just freaking out like a newbie. The fermentation is nice and steady now. I have just never encountered a lag time of 48 hours and I've brewed for 3 years now. We'll see how this yeast performs once its done.


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