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"Poc":f3bohvjk wrote: I think that this is a definitive way to prove if that's the case or not.[/quote:f3bohvjk]I think you have to go back before 1960 for that. And preferably to the Great Attenuation Shift[/url:f3bohvjk] of the late 1940s.

Oh, and I think freshness might be a wee bit of an issue as well with this sort of beer.

"TheBeerNut":37grzddr wrote: I think you have to go back before 1960 for that. And preferably to the Great Attenuation Shift[/url:37grzddr] of the late 1940s.

Oh, and I think freshness might be a wee bit of an issue as well with this sort of beer.[/quote:37grzddr]

Time to have a chat with Doc Brown so...

[/pop culture reference]

"Nev":bsoxy4ix wrote: A friend recently unearthed a small bottle of Guinness with a best before date of 1974...there is a fierce temptation there to crack it open & sample it, but obviously the likelihood of it being fit for consumption must be very low...any thoughts??[/quote:bsoxy4ix]

Would it have been bottle-conditioned at that time? <!-- s:?: --><img src="{SMILIES_PATH}/icon_question.gif" alt=":" title="Question" /><!-- s:?: --> If so, I'd wonder about offering it to White Labs or Wyeast to see if they could salvage anything from it...

&amp;quot;Les_Howarth&amp;quot;:1wk8weot wrote: Would it have been bottle-conditioned at that time? <!-- s:?: --><img src="{SMILIES_PATH}/icon_question.gif" alt=":" title="Question" /><!-- s:?: --> If so, I'd wonder about offering it to White Labs or Wyeast to see if they could salvage anything from it...[/quote:1wk8weot]As far as I know, Guinness was bottle conditioned until about 2000. I'm told by a veteran Irish homebrewer that harvesting Guinness yeast was standard practice until then.