Author Topic: frozen yeast cake  (Read 2694 times)

Offline Pinski

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Re: frozen yeast cake
« Reply #15 on: November 04, 2011, 03:02:16 PM »
Jurassic Bock?
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Offline tschmidlin

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Re: frozen yeast cake
« Reply #16 on: November 04, 2011, 04:26:26 PM »

If you buy in quantity, I would portion it out into small bottles and pressure can them for sterilization.

 Would a pint jar in a pressure cooker be safe. I've never dealt with glycerol. By this, I mean it doesn't have any weird expansion characteristics or something?
Not that I know of - it gets autoclaved regularly in my old lab.  It should expand/contract just fine in a mason jar with a loose lid.
Tom Schmidlin

Offline euge

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Re: frozen yeast cake
« Reply #17 on: November 04, 2011, 10:43:16 PM »

If you buy in quantity, I would portion it out into small bottles and pressure can them for sterilization.

 Would a pint jar in a pressure cooker be safe. I've never dealt with glycerol. By this, I mean it doesn't have any weird expansion characteristics or something?

 I always thought it would be cool (pun intended) to recover some yeast about a mile deep from the Antartica ice pack to brew with. Paleo-yeast.

There was an article earlier this year about how truly ancient yeast was found in some amber and was cultured up to make some decent beer.

So why not ice...?
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman

Offline punatic

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Re: frozen yeast cake
« Reply #18 on: November 04, 2011, 11:00:55 PM »

If you buy in quantity, I would portion it out into small bottles and pressure can them for sterilization.

 Would a pint jar in a pressure cooker be safe. I've never dealt with glycerol. By this, I mean it doesn't have any weird expansion characteristics or something?

 I always thought it would be cool (pun intended) to recover some yeast about a mile deep from the Antartica ice pack to brew with. Paleo-yeast.

There was an article earlier this year about how truly ancient yeast was found in some amber and was cultured up to make some decent beer.

So why not ice...?

Jurassic yeast! 
Aren't they supposed to be sterile?   ::)
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Offline a10t2

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Re: frozen yeast cake
« Reply #19 on: November 05, 2011, 01:08:27 PM »
I always thought it would be cool (pun intended) to recover some yeast about a mile deep from the Antartica ice pack to brew with. Paleo-yeast.

What could possibly go wrong?

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Offline Pinski

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Re: frozen yeast cake
« Reply #20 on: November 05, 2011, 01:56:34 PM »

[/quote]

Jurassic yeast! 
Aren't they supposed to be sterile?   ::)
[/quote]

No, they're all (supposed to be) females.
Thank you BEER!

Offline tschmidlin

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Re: frozen yeast cake
« Reply #21 on: November 05, 2011, 11:05:12 PM »
No, they're all (supposed to be) females.
Crap, don't get me started on yeast mating type and diploid nomenclature! ::)
Tom Schmidlin

Offline Pinski

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Re: frozen yeast cake
« Reply #22 on: November 05, 2011, 11:31:55 PM »
No, they're all (supposed to be) females.
Crap, don't get me started on yeast mating type and diploid nomenclature! ::)
Sorry Tom, I was making another really bad Jurassic Bock joke. :-[
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Offline tschmidlin

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Re: frozen yeast cake
« Reply #23 on: November 05, 2011, 11:50:44 PM »
No, they're all (supposed to be) females.
Crap, don't get me started on yeast mating type and diploid nomenclature! ::)
Sorry Tom, I was making another really bad Jurassic Bock joke. :-[
Hah!  I totally missed that, but I get it now. ;D

The thing that irritates me about the nomenclature is that the two haploid mating types are a and α.  a and α.  How stupid can it get?  I understand a and b or α and β, but a and α?!  Come on!

One of my old mentors worked on yeast mating type switching and sterility research decades ago and said she had the same objections, but no one listened.
Tom Schmidlin

Offline punatic

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Re: frozen yeast cake
« Reply #24 on: November 06, 2011, 12:26:14 AM »
Now see, if you studied knots as a Scout you would know α is a half hitch to the right, and β is a bowline (or two Ses in German, [think Weiβbier]).   :D

Yeast Scouts know this.
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Offline euge

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Re: frozen yeast cake
« Reply #25 on: November 06, 2011, 12:47:39 AM »
Now see, if you studied knots as a Scout you would know α is a half hitch to the right, and β is a bowline (or two Ses in German, [think Weiβbier]).   :D

Yeast Scouts know this.

+1
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman