Time expired yeast
Time expired yeast
I've got 2 packs of dried yeast exactly 1 year out of date; been kept in the fridge. Has anyone used old yeast before/will it still function correctly? Nottingham by the way. Thnks.
- Mashman
- Lost in an Alcoholic Haze
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Re: Time expired yeast
I used 2 packs of wilko yeast 2 days ago that I've had kicking around for years in the brew fridge. BB December 2018. It was bubbling nicely next morning
Two Valleys Brewery
Brewing up trouble
Brewing up trouble
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- Piss Artist
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Re: Time expired yeast
Me too. I used a packet of Notty yesterday afternoon Best before date Dec 18. Had been stored in a fridge since purchase. Rehydrated and pitched, nice rocky head this morning.
Primary : AG138 Amarillo Pale Ale
Conditioning : AG137 Mosaic Pale Ale
Drinking: AG131 London Bitter, AG132 Yorkshire Bitter, AG133 Guinnish, AG134 Witbier, AG135 Challenger Pale Ale, AG136 Kveik IPA,
Planning: Perle faux lager
Conditioning : AG137 Mosaic Pale Ale
Drinking: AG131 London Bitter, AG132 Yorkshire Bitter, AG133 Guinnish, AG134 Witbier, AG135 Challenger Pale Ale, AG136 Kveik IPA,
Planning: Perle faux lager
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- Falling off the Barstool
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Re: Time expired yeast
If refrigerated dry yeast only loses about 4% vitality a year. You'll be fine.
I'm just here for the beer.
Re: Time expired yeast
I think refrigeration is the key. I successfully used a packet of Safale SO4 that had been at the bottom of the fridge for nearly 4 years. Made up a starter first then pitched in a stout kit (only made to 24 pints no added sugars) turned out okay.
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- Hollow Legs
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Re: Time expired yeast
I'd just have a lower threshold to use both packs for the one batch, especially if at the higher end of range for OG or volume of 1 pack.
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- Falling off the Barstool
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- Joined: Fri Nov 23, 2007 5:30 pm
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Re: Time expired yeast
I recently brewed two different batches with Muntons regular yeast that had dates of Nov 2016. Both turned out good.
I'm just here for the beer.