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Old 10-22-2008, 06:33 AM   #1
Beer Maniac
SenorWanderer's Avatar
Aug 2007
Posts: 592
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I just pitched a Wyeast smack pack of London ESB 1968 into a 1 gallon starter. when i opened the pack the yeast was separated out from the other liquid and it looked curdled, like bailey's irish cream looks when you pour it into soda (don't ask how i know this). everything was normal procedure; bought it today, date on package is sept 30, smacked it about 3 hours ago, made the starter wort, etc. the pack got very bloated like usual, smelled fine.

anyone ever seen this? i've never used this yeast before, could it be this particular strain?


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Old 10-22-2008, 07:00 AM   #2
Blender's Avatar
Jan 2006
Santa Cruz, CA.
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Certain British strains do get very clumpy. I am not absolutely familiar with that yeast bit I would not worry. Here is a shot of WLP002 after 16 hours on the stirplate.


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Old 10-22-2008, 09:29 AM   #3
Dec 2006
Doylestown, PA
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Different yeast strains look different...I've found that highly flocculant yeast strains can look all sorts of clumpy. That pic is WLP007, another very flocculant yeast like 1968

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Old 10-22-2008, 12:30 PM   #4
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Apr 2007
West Chicago 'Burbs, IL
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Yes, it happens. WLP002 is the same thing as WY1968.

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Old 10-22-2008, 03:16 PM   #5
Oct 2008
Lake Bluff, Illinois
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Totally normal- Wyeast London ESB is probably the most flocculant ale yeast that they offer- definitely could clump in the smack pack

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Old 10-22-2008, 06:08 PM   #6
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Oct 2005
Oak Grove, Oregon, USA
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Plan on doing a little swirling to finish the ferment.
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Old 10-22-2008, 07:28 PM   #7
Oct 2007
South Florida
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Originally Posted by david_42 View Post
Plan on doing a little swirling to finish the ferment.
+2. You gotta make sure they "finish the job"
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Drinking: Yakima Blonde (Imperialized), Banana Wheat, Russian Imperial Stout, and anything i can get my hands on
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Old 06-11-2010, 10:02 AM   #8
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Feb 2010
Carbondale, PA
Posts: 498

For what is worth, it was Wyeast Labs London ESB Ale - 1968 that I am using.

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Old 06-12-2010, 11:58 PM   #9
Dec 2008
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London 1968 is our primary yeast for our house brews. When you get a good starter going it looks like cottage cheese in the jug. It is a very flocculant yeast and it clumps up like curds. It also works fast, usually 4 days and your at gravity. We give it quite a bit longer to clean up after itself. I'd say your smack pack is fine, the appearance your seeing is just one of characteristics of the strain.

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