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This may be a Stupid question, and since I am new to brewing beer I might have some more of these questions coming in later. My wife for some reason bought Brewer yeast, I am curious if this can be used as the yeast in beer brewing? forgive my lack of brewing terminology.

  • i have wondered this myself. It would of course depend on (a) the purity of the product, and (b) whether the yeast is alive. As for (a), since it is intended for consumption as it is, I would guess it is not pure, and contains many other microorganisms as well. – Nemis L. Aug 24 '16 at 11:51
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If your talking about the dietary suplement "Brewers Yeast", then No.

This is the same species of yeast used in brewing but it's dead and is used as a supplement for it's minerals etc.

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The simple answer is "maybe". If it has not been heat treated or otherwise sterilised, it may be used to brew. However "nutritional supplements" are often sterilised so it may be difficult to tell unless clearly stated. Even when not sterilised, if it is old stock it may not be sufficiently active to form a vigorous starter culture. Try some out by mixing/shaking in a clear jar/bottle with some sugar and some tepid/warm water. If the stuff is foaming well after a few hours then it probably could be used to brew. Whether that is a useful thing would depend on the beer being planned. For example "brewers yeast"if active may not be lager yeast....

For the sake of a few dollars it may be best to get some fresh brewing yeast of a strain suitable for brewing the desire beer. A "fresh" packet of dried yeast should last a year or so when kept cool in the fridge perhaps less on the shop shelf. Liquid ("smack") packs and culture tubes are fashionable but may not be any more advantageous to the novice brewer.

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  • Thank you, everyone! I will just go out and buy the real deal from the Local brew shop. – RMURF Aug 25 '16 at 15:22
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I would prefered to write a comment, however i have not enought reputation yet.

As has been said, that yeast is dead, so it will not ferment.

On the other hand, some people around internet talks about using this dead yeast as yeast nutrient (example). However some say it could add unwanted flavours due to the autolisys (no idea about the theory at this point).

In my experience, I have tryed it adding a spoon into the boil. Do not detected neither, bad flavour or better fermentation.

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  • I don't see why it can't be used as a yeast nutrient. All the powders in homebrew yeast nutrient products are mostly just dead yeast with some added metals, vitamins, etc that help healthy yeast growth. – Evil Zymurgist Aug 25 '16 at 13:36
  • Me neither, just telling what some people talk about. Dead yeast could impart "bad flavours" for some reason, but I have not detected them. – Gabriel Aug 29 '16 at 13:02

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