American wild ale is a style of beer pioneered by American microbreweries which is characterized by the use of yeasts other than Saccharomyces cerevisiae for fermentation. Beers in this style are typically fermented using a strain of brettanomyces for part or all of the fermentation.  The use of brettanomyces or other yeasts can result in a funky, complex flavor profile can be inappropriate to other beer styles. Examples include Jolly Pumpkin Perseguidor, Avery 15, Ommegang Ommegeddon, and Avery Brabant.
The style is recognized by the BeerAdvocate website, but not by the BJCP
- ^ The Beer Nut: Love 'em or leave 'em Art Illman/Daily News staff By Norman Miller GateHouse News Service Posted May 28, 2008 
- ^ Greg Kitsock "A Yeast That Brings Out Brewers' Wild Side" Washington Post September 2, 2009 
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- ^ The Beer Nut: Love 'em or leave 'em Art Illman Daily News staff Norman Miller GateHouse News Service May 28, 2008 
- ^ The Beer Nut: Pair your Thanksgiving menu with beer Allan Jung/Daily News staff By Norman Miller GateHouse News Service Posted Nov 18, 2008 
- ^ 11 FEBRUARY 2009 Ales gone "wild"! Hoppy Valentine's Day 
- ^ "American Wild Ale"
- ^ "2008 BJCP Style Guidelines"