here's what is interesting- Kentucky Common is NOT a sour style of beer. At least, it's not supposed to be! I spent quite a long time chatting with Dibbs Harting about it. The trust of the paper: * "Therefore, the bacterium must be one of the hop insensitive species, more than likely L. brevis which no brewer would purposely introduce into his or her brewery but most likely resulted from
contaminated cooperage". And later, "One of the benefits of consolidation and emergence of much larger breweries was the incorporation of
cooperage operations which assured the barrels were sound, well pitched and, most importantly, sanitized.* *Unfortunately, these attributes were not shared in the smaller breweries.* *It is here that I believe, however intriguing, the sour beer myth and legend originated."
For info:
http://www.bjcp.org/docs/NHC2014-kycommon-handout.pdf