How Long Can You Store Liquid Yeast? - Using old yeast

How Long Can You Store Liquid Yeast - Using old yeast
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In this video, I try to different liquid beer yeasts that have just been sitting in my yeast fridge for over 15 months. A common question I get is how long fresh brewers yeast keeps the way I harvest and store it. I do no yeast washing. I will do 2 starters and pitch the yeast in them. And then taste the starters to see if they come out good with liquid yeast being stored in the refrigerator long term.
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How I store my yeast:
• How to store yeast
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• How To Make A Yeast St...
My one year reusing yeast experiment:
• How many times can you...
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[@DrHansBrewery]

Visit my website for my free ebook: bit.ly/DrHans Gear I Use and recommend: bit.ly/drhanssf

[@itznolimitz]

Cheers from the US. Like your videos and content. Keep them coming!

[@barleypop4me]

Greetings from Minnesota. I have thought about attempting this but wasn’t sure of the way to go. About 6 years ago I froze yeast with a glycerin/water mix and have yet to thaw and attempt a starter. I will definitely use your procedure. Thank you for another great video.

[@cheshirehomebrew]

Great experiment from the Dr I believe Robinson's brewery has been using the same yeast strain for many years in their commercial beers. Cheers for the mention too.👍🍺

[@DrHansBrewery]

Cheers buddy!

[@captainsalmonslayer]

I pitched some 13 month old voss slurry into 4 litres of cider @ 40c. Took a whole day but kicked off with no issues and fermented fine.

[@DrHansBrewery]

Ive used some real old yeast with great sucess, but as you say somethimes with a slower start.

[@mothox]

Thanks for the vid. I was questioning today using a US05 I’ve had in the fridge for 4 months. That puppy’s going in the next brew. 🍻

[@DrHansBrewery]

Glad you liked it!

[@craigneuberger9817]

I still have 2jars of yeast slury from an alt i brewed almost 2years ago, now I’m gonna try this, cheers dr , get it in yaaaa!

[@DrHansBrewery]

Cool, make a starter and get it in ya before deciding if you're gonna pitch it

[@ausfoodgarden]

Nice experiment. I've revived yeast that was in storage, not chilled, that was over 5 years old and it still made beer that tasted true to its type. I did mainly English ale yeasts and American ale types. Cheers from Australia

[@Dts1953]

Top video Doc as usual great experiment 👍👍👍

[@DrHansBrewery]

Thanks mate!

[@SafferBrew]

Nice vid bud. I love reusing yeast, especially the expensive or seasonal ones!

[@SyBernot]

I see homebrewers stress when their yeast pack is out of date by even a few days. The amazing thing about keeping yeast is you really only need 1 cell to survive. There are strains of yeast that go back thousands of years. If out of an entire vial of yeast you only have one viable cell and all the right conditions you can have a large enough colony to properly pitch a 5 gal batch in about 3 days. I've reused yeast thats years old with no problem but you do have to go through the step of making a starter (or roll the dice on a 5 gal batch of beer). I have a 6 year old champagne yeast in my freezer that was treated with VG prior to freezing. I have no doubt that I can get it to chooch.

[@bradleypariah]

Earlier this week, I made two brews on back-to-back days. Both of my harvested yeasts were originally purchased in March, and used in several beers, but the last time I harvested them from a beer was in June, so they'd been sitting in water in the fridge two months. That's the longest I've ever gone without re-pitching. One was Fermentis Saflager 34/70, the other was White Labs San Diego Super Yeast. I had something *_a little_* weird happen. The San Diego bubbled like crazy during fermentation, but the 34/70 had basically no airlock activity. I saw maybe one or two small bubbles in 72 hours. I was going to pitch another jar of 34/70 on the third day, but I thiefed a sample and checked my gravity, and it was finished! No idea how that happened. I don't use traditional airlocks. I ferment in 5-gallon glass carboys, and I have a snug rubber tube that fits right in the mouth of the carboy, and goes into a small jug of StarSan, no possibility of having a bad seal. It simply didn't bubble. I tasted the liquid in my harvest jars (I always think of you saying, "always taste your starter!" when I do it), and the liquid from both yeasts tasted nice. The sample of the beer that didn't bubble tasted perfect. Apparently everything was fine. I usually harvest two jars (ending up with about a centimeter of yeast on the bottom) from each beer I make. I don't have the gear to ramp up starters, so if I ever have yeast that's getting close to a year old, I think I'll just pitch two jars. Thanks for the video!

[@DrHansBrewery]

It ain't such a thing that fermentation won't off gas so it must have been a seal issue. Glad my mantra "always taste your starters" has gotten into your head. Cheers

[@Heathshrdz24]

I just made a beer with yeast i harvested. It was in the refrigerator for weeks and it was accidentally frozen. I thawed it out, added a little wort 3 hours before pitching and it took off!

[@DrHansBrewery]

I froze a starter aswell. Beer turned out great!

[@getnilsson]

Nice i was thinking i needed to get a pressure cocker ond agar agar tubes to store yeast for that log, now i have to buld me a yeast storage.

[@DrHansBrewery]

This has been working for me!

[@BigBananaBrewing]

Always something I've wondered about. Just shows yeast are almost indestructible. That boilover looked like something out of Frankenstein.

[@chuckp3986]

I have some yeast I don't know what to do with yet and don't want to get rid of it. I refreshed it with a new starter and am storing it with a little glycerin in the freezer. When I figure out what to do with it I hope it's ok. I'm also thinking of storing my voss kveik long term. For now it's in a beer bottle.

[@satsukiobsession588]

What is that beautiful tree behind you m8 ? Got some red berries on it , do you use those in some of your brews?

[@DrHansBrewery]

It's a Rowan berry tree. I haven't so far. This year its given a lot of berries and the look gorgeous. You can use it for wine. Maybe I'll try it in a beer this year. You are supposed to wait to pick them until the first frost.

[@satsukiobsession588]

@@DrHansBrewery ah okay , that sounds pretty cool (going to look into seeing if I can get one down here ) Thanks for the reply btw!

[@jennifersaville4332]

Do you brew and ship to the States? I'd like to try some of your wonderful brews.

[@DrHansBrewery]

Thought you would start brew your self

[@jennifersaville4332]

@@DrHansBrewery I am but I wanted to taste yours, guess I'll have to visit you some day to do that

[@DrHansBrewery]

@@jennifersaville4332 Youre welcome. I actually had a Patreon competition around new years where I sent out a bottle.

[@canadianbrewer]

Just make a starter with 152 day old yeast. Going good the next morning. I haven't gone over 5 months before. 1 1/2 years? Thanks for doing it.

[@DrHansBrewery]

Awesome, glad you liked it!

[@krippa19700]

Meget bra video så se på en bryggegag fra en vis plass

[@DrHansBrewery]

Kul att du gillade den. Skål!

[@stuganErik1337]

made a kolsch thanks to your video on it, and that yeast was expensive as fuck... so i harvested it ofc, and it better work next time i decide to use it :D

[@DrHansBrewery]

Dunderklumpen Fingers crossed!

[@OldNorsebrewery]

everything boils over the second you turn your back. Cheers

[@DrHansBrewery]

Every time!