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Terminology and Combining Techniques
The techniques used by brewers to create sour, acidic, funky, and wild beers often blur the lines between different established techniques. This makes it difficult to always put a box around a given brewer's process. For example, some brewers will use an open vessel such as a [[coolship]] to cool their wort overnight, and collect ambient microbes from the surrounding environment similar to how [[Spontaneous Fermentation]] is done, but also will add cultures from a laboratory afterwards. Some brewers will use a [[Wort_Souring|kettle souring]] process to create acidity up front, and then pasteurize the beer and age it in a barrel without ''Brettanomyces'', thus creating an acidic beer with residual sugars. Some brewers may first sour wort, not pasteurize it, and then add ''S. cerevisiae'' and ''Brettanomyces'' to the beer to finish the fermentation, and then either steel ferment or barrel ferment the beer. The ways in which different techniques can be combined are too many to list, and are constantly evolving with the creativity of brewers.
In addition to the overlap of different processes, there are also other unresolved issues with labels such as "wild" or "spontaneous". For example, Is is a beer only considered "spontaneous" if it is cooled in a coolship, or is it also "spontaneous" if the wort is simply transferred to a barrel that previously held a beer that was inoculated only by ambient microbes from cooling in a coolship? Are microbes that are [[Wild_Yeast_Isolation|wild caught]] from fruit or flowers and then isolated and cultured considered "spontaneous" or "wild" or something else? Some terminology is still up for debate and evolving as brewers continue to discuss them.
Both of these issues not only make talking about sour/funky brewing difficult between brewers, but they also make it even more challenging to communicate to consumers what it is the brewer is doing to make the beer that they are drinking, and why that process is important. Efforts by professional brewers have recently been made to begin discussing these terms, and what effects on the market various terms might have. For example, brewers who barrel age sour beers have occasionally been critical of other brewers who produce kettle sour beer. One common complaint is against the practice of charging a similar price point to barrel aged sours for kettle soured beers, which generally take much less time to produce. Most kettle soured beers, however, are given a fair and reasonable price point by most brewers. On the other side of the discussion however, brewers who sour wort are critical of the term "kettle souring" being portrayed as only a "shortcut" or only a way to make "one dimensional sour beer", and thus causing consumers to perhaps view kettle soured beers in a negative light despite the unique beers that can be created from such a process. [[Gose]] and [[Berliner Weissbier]], although popular and worthy styles of beer, are also not the only styles that can be brewed with wort souring or kettle souring techniques. As with any relatively new practice, knowledge and experience in kettle souring techniques are continuing to improve, and the quality of these beers will continue to improve, just as they did when American brewers first started exploring and learning how to produce high quality barrel aged mixed fermentation beers. Indeed, brewers who are passionate about souring wort often know just as much (and sometimes more) about the microbes and processes they are using than brewers who use mixed cultures, and they can create both desirable and very unique beers. In conclusion, educating consumers about specific processes that different brewers use to produce their beers will foster understanding and appreciation for the wide array of different techniques and philosophies, and their resulting beers for both consumers and fellow brewers. To that point, this wiki will attempt to help educate the public about the various sour and funky brewing processes.
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