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'''Orval Brewery''' is a Belgian Trappist brewery located in the Guame region of Belgium. Its flagship beer, Orval, is known for going through a secondary fermentation in the bottle with a single strain of ''Brettanomyces bruxellensis'' <ref>[https://en.wikipedia.org/wiki/Orval_Brewery Orval Brewery. Wikipedia. Retrieved 10/23/2019.]</ref><ref>[http://www.babblebelt.com/newboard/thread.html?tid=1108752780&th=1275339078&pg=21&tpg=1&add=1 Chad Yakobson. The Burgundian Babblebelt forum. 06/09/2010.]</ref>. Beer historian Ron Pattinson has claimed that there is evidence to suggest that Orval is a close relative and perhaps even reflective of historical English pale ale <ref>[http://barclayperkins.blogspot.com/2011/04/brettanomyces-and-pale-ale.html?showComment=1302003154073#c2179803049904055047 Ron Pattinson. Shut Up About Barclay Perkins blog. 04/05/2011. Retrieved 10/23/2019.]</ref><ref>[http://www.babblebelt.com/newboard/thread.html?tid=1108752780&th=1275339078&pg=21&tpg=1&add=1 Chad Yakobson. The Burgundian Babblebelt forum. 06/09/2010.]</ref>.