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Old 04-29-2014, 01:30 AM   #1
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Default Reharvesting Yeast

I want to start reusing my yeast to save money. What are the best and most efficient ways to do this? I've read you can scrap it off the top but I use glass carboys. I've also read to collect the yeast from the bottom of bottles after drinking and do a yeast stater in that to revitalize it. Can you also use the trub? What are your experiences?


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Old 04-29-2014, 01:49 AM   #2
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http://www.homebrewtalk.com/yeast-ha...-approach.html

http://www.homebrewtalk.com/easy-yeast-washing.html

Those are a couple articles on the subject. I used to use the Novel Approach until I found out most of the guys in my home brew club simply increased their batch volume by a gallon, ran off the extra gallon into a 1 gallon jug, and used that to propagate yeast. That's the easiest way I've found, and it creates a lot more yeast than a 2L stir plate starter will.
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Old 04-29-2014, 01:57 AM   #3
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I used to use the Novel Approach until I found out most of the guys in my home brew club simply increased their batch volume by a gallon, ran off the extra gallon into a 1 gallon jug, and used that to propagate yeast.[/QUOTE]

What yeast do you use in the 1 gal jug? From the starter? I've been harvesting yeast from starters for a while now, my wlp001 is probably on its 10th generation and is still super clean. I only buy yeast when I want to try a new strain then harvest, repeat etc


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Old 04-29-2014, 12:29 PM   #4
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What yeast do you use in the 1 gal jug? From the starter? I've been harvesting yeast from starters for a while now, my wlp001 is probably on its 10th generation and is still super clean. I only buy yeast when I want to try a new strain then harvest, repeat etc


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Think of the gallon jug as the starter. Every time I brew I'm making yeast for a future batch with the extra gallon. The first time you do it, make a starter before you brew, then split the starter. Use half for the batch you are brewing, then use the other half in the extra gallon you run off. You can then decant the gallon and split it into two small jars, once it's done fermenting.

Then on your next batch, use one of those jars for the full batch, and run off another gallon of wort for the other jar. This way, you don't have to worry about setting aside time specifically for making a starter, unless the yeast has been sitting for a long time, or you're doing a really high gravity beer.

My last brew was a 1.080 IIPA, which I pitched a month-old jar into with no starter, and it fermented beautifully. Down to 1.015 in four days. I've quit making stir plate starters except for new vials of yeast, and I brew often enough that the yeast isn't sitting for more than a few months at most. If it sits longer than that, I'll probably make a starter before pitching.
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Old 04-29-2014, 12:43 PM   #5
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I just collect yeast from the yeast cake in my fermenter, and re-pitch it directly into my next batch. Yes, hop pellet and trub laden yeast directly from one batch to the next. Sometimes I collect and pitch the slurry immediately from one batch to the next, sometimes I store the slurry in the fridge in a jar.

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Old 04-29-2014, 12:58 PM   #6
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I just collect yeast from the yeast cake in my fermenter, and re-pitch it directly into my next batch. Yes, hop pellet and trub laden yeast directly from one batch to the next. Sometimes I collect and pitch the slurry immediately from one batch to the next, sometimes I store the slurry in the fridge in a jar.
That's definitely the easiest way to do it, but many of my batches have a ton of pellet hops in the boil, and I'd rather pitch the clean yeast. More of a personal preference.
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Old 04-29-2014, 01:12 PM   #7
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Quote:
Originally Posted by TheZymurgist View Post
http://www.homebrewtalk.com/yeast-ha...-approach.html

http://www.homebrewtalk.com/easy-yeast-washing.html

Those are a couple articles on the subject. I used to use the Novel Approach until I found out most of the guys in my home brew club simply increased their batch volume by a gallon, ran off the extra gallon into a 1 gallon jug, and used that to propagate yeast. That's the easiest way I've found, and it creates a lot more yeast than a 2L stir plate starter will.
Are you using the extra gallon to harbor yeast from the current batch or fresh yeast for up coming batches. Or to say it differently, is the extra gallon collect before fermentation or after? Cheers
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Old 04-30-2014, 12:42 PM   #8
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Are you using the extra gallon to harbor yeast from the current batch or fresh yeast for up coming batches. Or to say it differently, is the extra gallon collect before fermentation or after? Cheers
After the boil, before fermentation. So you're always working one batch ahead. Instead of making a starter the week before you brew, you're basically doing it an entire batch ahead.
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Old 05-03-2014, 12:49 AM   #9
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How long do you leave the stir plate stirring while making a starter?


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