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Yeast Farming


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#221 djar007

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Posted 15 November 2014 - 10:09 PM

How on earth do you guys make starters for say fifty litres. I run my stats through Mr malty and it asks for five and six litre starters. So although it's working making four litre starters I am underpitching. How do people with bigger setups get around this.

Edited by djar007, 15 November 2014 - 10:17 PM.


#222 Black n Tan

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Posted 15 November 2014 - 10:16 PM

Step starter. Usually 1L, refrigerate and discard spent wort, then step up to 4L. 



#223 djar007

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Posted 15 November 2014 - 10:21 PM

Cheers grant. Makes sense. I will have a try at that. So the first litre will double my yeast. Then I step up the already double amount to four litres. Problem solved. Thanks heaps.

#224 kaiserben

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Posted 19 October 2015 - 01:39 PM

If I wanted to, instead of pitching on to a yeast cake as soon as it becomes available, save a yeast cake to pitch into wort later (say 3 weeks later), what's a good, safe method of saving it for later? 

Will I be able to figure out roughly how many cells I'll have, or how much I need to save to have roughly the amount of cells I'll need? 

For reference I'll be pitching approx 425bn cells WLP838 into a dunkel. When I move that dunkel to secondary I'd like to salvage enough yeast to be able to pitch approx 425bn cells into a schwarzbier 3 weeks later. 



#225 jibba02

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Posted 20 October 2015 - 08:51 PM

WTF is wrong with my frozen yeast? Why is it trying to escape?

 

50% yeast slurry was added to the tube then a 30% glycerine mix was added to make up the other 50%

The tube was then shaken, lid cracked and placed in the fridge for 2 days. Then transfered to the freezer with the rest of my yeast.

The tubes were stored upright.

 

 

 

 

Attached File  yeast.jpg   45KB   30 downloads


Edited by jibba02, 20 October 2015 - 08:56 PM.


#226 Yob

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Posted 20 October 2015 - 09:08 PM

Trapped CO2

#227 jibba02

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Posted 20 October 2015 - 09:15 PM

Thought i may have been. Top of tube has obviously frozen before the bottom. The top of the tube was very close to the fan :(