Homebrewers Association | AHA Forum

General Category => Yeast and Fermentation => Topic started by: dhacker on July 19, 2010, 10:45:50 PM

Title: Smack Pack Variability
Post by: dhacker on July 19, 2010, 10:45:50 PM
Well . . . My Old Jubilation clone got put on hold this past weekend as lightning caused me to get called out for some repair work. Anyway, when I "popped" the pair of WY1028 packs to make twin 1 gallon starters. One pack was hideously swollen after 8 hours, the other . . not so much. Not the first time I've had this happen, but have always wondered why the differing personalities with the identical yeasts that have the same date codes.   

???
Title: Re: Smack Pack Variability
Post by: denny on July 20, 2010, 02:33:44 PM
Interesting question.  I'd suggest emailing Greg Doss at Wyeast and see if he has an explanation.
Title: Re: Smack Pack Variability
Post by: mindar on July 28, 2010, 05:07:40 AM
I've heard of this before. My LHBS said it was why they only sole White Labs.
Title: Re: Smack Pack Variability
Post by: a10t2 on July 28, 2010, 05:36:46 AM
Because if the White Labs vials were different, you'd never know? ;)
Title: Re: Smack Pack Variability
Post by: dhacker on July 29, 2010, 11:41:42 AM
 :D :D
Title: Re: Smack Pack Variability
Post by: dhacker on July 30, 2010, 01:31:36 PM
Interesting question.  I'd suggest emailing Greg Doss at Wyeast and see if he has an explanation.

I did . . as of yet, no response.
Title: Re: Smack Pack Variability
Post by: narvin on July 30, 2010, 01:42:33 PM
Because if the White Labs vials were different, you'd never know? ;)

You jest, but it probably does cause a lot of trouble for LHBSs.  In reality, the yeast is usually still good, and they should probably be making a starter with it anyway.
Title: Re: Smack Pack Variability
Post by: dhacker on July 30, 2010, 08:43:48 PM
Ah . . I did just get a very nice response from Greg . .


Unfortunately, I do not have a good answer for this situation other than
it should not happen.  Assuming that the nutrient packets in both
packages (identical strain and lot#) were ruptured, they should expand
the same.  CO2 production is an indicator of culture health, so it may
be possible that one of the packages was compromised at some point.  If
the package showed signs of swelling and then was put into a starter,
there is less reason for concern.  If the package was to be directly
pitched into wort, additional inoculum may be necessary.

Yeast is a living organism and is subject to a loss in
viability/vitality over time.  All cultures leave our facility meet
our rigid specifications, allowing us to guarantee the quality and
performance of our products.  If you have concern over the culture,
please return it to your retail shop for a replacement culture.

I hope that this helps.

Cheers,

Greg 

 

As it turned out, the starters took off just fine and so did the Old Jubilation fermentation. Wyeast comes through again!  :)
Title: Re: Smack Pack Variability
Post by: narvin on July 30, 2010, 08:59:48 PM

As it turned out, the starters took off just fine and so did the Old Jubilation fermentation. Wyeast comes through again!  :)

And the smack pack concept is proven pointless yet again  ;)