Yeast washing
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Professor Frink
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Sanitizer doesn't kill wild yeast spores.
conpewter
Well-Known Member
I think sanitizer would kill wild yeast (not sure about the "spores" part). I only know that I tried to "Acid wash" yeast one time and managed to kill them all very quickly with the usual mixture of star-san. This was a mistake but thankfully I had more yeast from that batch that I just washed the usual way.
Yeast can survive lower PH than bacteria, but even they have their limits.
From the description of star-san
Yeast can survive lower PH than bacteria, but even they have their limits.
From the description of star-san
homebrewer_99
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I've only ever used Starsan on my washed yeast containers...
Bernie Brewer
Grouchy Old Fart
Sanitizer doesn't get rid of the oxygen in the water. Get rid of the oxygen,the yeast go dormant.
Funkenjaeger
Well-Known Member
When yeast washing you need to be as sanitary as possible, even more so than when doing regular brewing. Starsan is great stuff, and excellent for brewing, but boiling is still better.
Professor Frink
Well-Known Member
When I'm readying my canning jars for washing, I boil them mainly because I know that it will kill all the nastys, and it's not that much more work. Plus, you know they'll be clean as a whistle that way.
slnies
Well-Known Member
Actually, boilling for 15 is great, but presure cooking for 15 at 15 PSI is better. The reason for either is not only to kill wild yeast, but other more hardy bacteria that will screw with your cultures. The more sterile you can get the better off you are. Sanitizer is good, and bleach is better at killing nasties but they still do not leave a sterile enviroment for your yeast. End of story.
beergorila
Well-Known Member
how about an oxyclean/sanitizer double punch?
homebrewer_99 said:I've only ever used Starsan on my washed yeast containers...
ditto. star-san the jars/lids. but I do use boiled/cooled water to pour into primary/wash the yeast.
but I'm not bothering with pressure cooking the jars.
zero problems thus far with 4 of the 5 Kolsch jars I washed the first time.
