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Old 04-25-2013, 07:40 PM   #1921
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Originally Posted by JonGrafto
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This is a picture of what I ended up with by directing my blowoff into sterile water and then cold crashing. Pure white yeast at the bottom of my 3000 ml erlenmeyer. Looks good to me.

See post #1913 for my setup.
That looks gnarly! Gonna have to try that myself in my next batch.
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Old 04-26-2013, 12:50 AM   #1922
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So what's the difference between top cropped yeast and all the other ways to get yeast?

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Old 04-26-2013, 01:03 AM   #1923
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So what's the difference between top cropped yeast and all the other ways to get yeast?
From the way I understand it, top cropping is taking the foamy substance from the top of an actively fermenting ale. Another way is to rinse yeast after it is done fermenting and you have bottled or kegged your beer (what's left at the bottom).
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Old 04-26-2013, 01:10 AM   #1924
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Yes, I get how they are done (I've rinsed yeast a few times from my primary fermenter), but what I was asking is if the top crop yeast is any different, i.e. cleaner, fresher, better, etc?

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Old 04-26-2013, 01:35 AM   #1925
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Yes, I get how they are done (I've rinsed yeast a few times from my primary fermenter), but what I was asking is if the top crop yeast is any different, i.e. cleaner, fresher, better, etc?
Well I'd imagine it would be free of trub. Other than that I have no clue.
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Old 04-26-2013, 02:40 AM   #1926
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Quote:
Originally Posted by JonGrafto
Update:

This is a picture of what I ended up with by directing my blowoff into sterile water and then cold crashing. Pure white yeast at the bottom of my 3000 ml erlenmeyer. Looks good to me.

See post #1913 for my setup.
I looked at your pic, but I am having some trouble seeing how you're venting it.
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Old 04-26-2013, 02:58 AM   #1927
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I looked at your pic, but I am having some trouble seeing how you're venting it.
Blowoff from fermenter to orange lid on erlenmeyer. Them on the other tube on the orange lid I put foil but it kept being blown off so I took a chip clip to make sure the foil stayed on but allowed co2 to escape.
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Old 04-26-2013, 01:49 PM   #1928
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Yes, I get how they are done (I've rinsed yeast a few times from my primary fermenter), but what I was asking is if the top crop yeast is any different, i.e. cleaner, fresher, better, etc?
I may be way off here, but it's my understanding that yeast you get from the foam is some of the more active yeast of the strain. These are the boys who go in guns blazing and ready to convert the sugars into Alcohol and CO2. In the good old days they used to skim this off to pitch it into another batch.
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Old 04-26-2013, 02:12 PM   #1929
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I may be way off here, but it's my understanding that yeast you get from the foam is some of the more active yeast of the strain. These are the boys who go in guns blazing and ready to convert the sugars into Alcohol and CO2. In the good old days they used to skim this off to pitch it into another batch.
^^^ This is my understanding as well..

And since you are losing your healthy guys in the blowoff, instead of making them kamikazi pilots, I am rescuing them to live another day.
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Old 04-27-2013, 04:58 AM   #1930
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There's a difference between cropping yeast out, which would happen during fermentation, and collecting yeast after fermentation.

I have never tried cropping. Never wanted to risk contamination. However, I have reused yeast. Recently I have begun only collecting for reused a finer, lighter in color, upper layer that rests above the "trub." I think this is the good yeast swhich can be used again (and agin, and again).

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