Frognostic
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- Feb 8, 2015
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I used Vigo Cider Yeast in the last batch of cider I made.
The gravity was quite high, I think, although I didn't have my handy measuring test jug thing at hand to do a proper hydrometer reading. If I remember correctly, it had a potential alcohol of around 15% (whatever specific gravity that translates as) when I floated it in the fermentation bucket.
This yeast is a strain of saccharomyces bayanus, which I understand to be the same species as Champagne yeast which I hear has alcohol tolerance of up to 18%. I'm guessing, though, that the cider yeast and champagne yeast strains have different properties.
I checked the information sheet that came with the yeast packed and it said nothing about alcohol tolerance. I checked the website and, unlike Lalvin's website when referring to their wine yeasts, had no information about the alcohol tolerance of the cider yeast. (Here it is: http://www.vigopresses.co.uk/Catalogue/Yeast-and-Chemicals/Vigo-Cider-Yeast-100g-tub-94419 )
So the question is this: does anybody have any idea at what alcohol percentage this particular strain of yeast will be killed off?
The gravity was quite high, I think, although I didn't have my handy measuring test jug thing at hand to do a proper hydrometer reading. If I remember correctly, it had a potential alcohol of around 15% (whatever specific gravity that translates as) when I floated it in the fermentation bucket.
This yeast is a strain of saccharomyces bayanus, which I understand to be the same species as Champagne yeast which I hear has alcohol tolerance of up to 18%. I'm guessing, though, that the cider yeast and champagne yeast strains have different properties.
I checked the information sheet that came with the yeast packed and it said nothing about alcohol tolerance. I checked the website and, unlike Lalvin's website when referring to their wine yeasts, had no information about the alcohol tolerance of the cider yeast. (Here it is: http://www.vigopresses.co.uk/Catalogue/Yeast-and-Chemicals/Vigo-Cider-Yeast-100g-tub-94419 )
So the question is this: does anybody have any idea at what alcohol percentage this particular strain of yeast will be killed off?