The name American Wild Ale is in common use by craft brewers and homebrewers. However, the word Wild does not imply that these beers are necessarily spontaneously-fermented; rather, it indicates that they are influenced by microbes other than traditional brewer’s yeasts. This category is intended for a wide range of beers that do not fit traditional European sour or wild styles. All of the styles in this category are essentially specialty beers where many creative interpretations are possible, and the styles are defined only by the use of specific fermentation profiles and ingredients. As specialty styles, the mandatory description provided by the entrant is of the utmost importance to the judge.
Throughout this category, Brett is used as an abbreviation for Brettanomyces. This is the term most craft brewers and homebrewers will use in conversation, if not in formal communications.