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100% Brettanomyces Fermentation

10 bytes added, 17:13, 2 November 2016
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===Are 100% Brett Beers Really Cleaner?===
A lot of the conventional wisdom listed above regarding 100% ''Brettanomyces'' fermentations is anecdotal information derived from Trois fermentations. As explained above, Trois is not actually ''Brettanomyces'', and so conventional wisdom regarding 100% ''Brettanomyces'' beers has been brought into question. One particular area of question is the conventional wisdom that ''Brettanomyces'' requires phenols from POF+ ''Saccharomyces'' strains in order to convert 4-vinyl phenols into 4-ethyl phenols, and that 100% ''Brettanomyces'' fermentations are therefore "less funky".
There is surprisingly little data to back this idea up outside of the anecdotal information gathered from brewers fermenting with 100% Trois, which was once thought to be ''Brettanomyces'' <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1226859710675574/?comment_id=1226864927341719&reply_comment_id=1226949030666642&comment_tracking=%7B%22tn%22%3A%22R%22%7D Conversation with Lance Shaner on MTF. 02/05/2016.]</ref>. One controlled experiment by [[Brettanomyces_secondary_fermentation_experiment|Lance Shaner of Omega Yeast Labs and Richard Preiss of Escarpment Labs]] showed that the levels of 4-ethyl guaiacol and 4-ethyl phenol produced by ''Brettanomyces'' did not depend on the amount of their 4-vinyl precursors, suggesting that ''Brettanomyces'' is capable of producing 4EP and 4EG ''de novo'' (without being dependent on precursors produced by ''Saccharomyces''). In addition to this, the possibility that some yeast labs have ''Saccharomyces'' contamination issues in their ''Brettanomyces'' products complicates the issue. This is only one data point, however, and more data needs to be researched.

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