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Old 08-31-2011, 08:11 PM   #1
Aug 2011
Morristown, New Jersey
Posts: 3

I received a Wyeast smackpack in a kit I received two weeks ago, when it arrived, the pack had already swollen up considerably. I immediately placed it in the refrigerator. It is still swollen. Will this yeast still be viable come time for brew day at the end of this week?

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Old 08-31-2011, 08:12 PM   #2
Nov 2010
Sioux Falls, SD
Posts: 207
Liked 4 Times on 4 Posts

Are you planning on making a starter? This will let you know if your yeast are viable or not.

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Old 08-31-2011, 08:31 PM   #3
Apr 2010
Pasadena, MD
Posts: 327
Liked 7 Times on 6 Posts

If it were me I'd get a new smack pack or some dry yeast. I think you're supposed to use those things within 24 hours or so of breaking the inner blister pack. Make a starter to see if they take off. I think that's the only way to be sure at this point. Not worth chancing it.
Aim small miss small.

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Old 08-31-2011, 08:34 PM   #4
Ale's What Cures You!
Yooper's Avatar
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,884
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I had a smackpack come already swollen yesterday. I just stuck it in the fridge, and I know it will be fine. Remember, the ONLY thing smacking the pack does is release a small package of nutrients. It can't harm the yeast, and it can't grow any yeast. Swollen or not swollen doesn't really matter at all.

Of course, for any beer with a gravity over about 1.040, a starter should be made with liquid yeast anyway. The package doesn't need to swell before using in a starter, but it doesn't matter if it is. So, I'll just use this yeast in a starter when I'm ready to brew anyway.
Broken Leg Brewery
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Old 09-01-2011, 01:36 AM   #5
enkamania's Avatar
Nov 2010
Seattle, WA
Posts: 711
Liked 93 Times on 69 Posts

I finally got one to swell on my last batch.
Brewing is the perfect combination of cooking, science and alcholism

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Old 09-01-2011, 01:44 AM   #6
kh54s10's Avatar
Aug 2011
Tiverton, Rhode Island
Posts: 11,658
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I had 2 come swelled. I put both in the fridge for a few days. One was swelled enough that I could not break the nutrient pack. When I made the starter I had to fish out the pack and snip it with sanitized scissors. Both starters went off without a hitch. Bottled the first today. An Extra Pale Ale. The FG sample tasted great.

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