[[Image:Bottle_of_La_Trappe_Quadrupel.jpg#file|thumb|right|250px|Bottle of La Trappe Quadrupel]]
'''Quadrupel''' is the brand name of a strong seasonal [[beer]] ''La Trappe Quadrupel'' brewed by [[De Koningshoeven Brewery]] in the [[Netherlands]], one of the onlytwo [[Trappist]] brewing [[abbey]] not in [[Belgium]] (the other is the [[Engelszell Abbey]] in [[Austria]]. In other countries, particularly the [[United States]], 'quadrupel' or 'quad' may refer to an especially strong style of dark [[ale]], with a characteristic spicy, ripe fruit flavor.<ref>[http://www.chow.com/stories/11362 "Belgian Beer Primer"] Chow.com</ref><ref>[http://72.14.209.104/search?q=cache:tyU9OZEgzgcJ:www.newglarusbrewing.com/beers.html+new+glarus+quadruple&hl=en&ct=clnk&cd=5&gl=us newglarusbrewing.com ]</ref><ref>[http://72.14.209.104/search?q=cache:tdjNhQItm5sJ:www.averybrewing.com/about/press/getAmen+quadruple+beer+OR+ale&hl=en&ct=clnk&cd=7&gl=us averybrewing.com]</ref><ref>May. 25, 2007 ''[[Philadelphia Daily News]]'', [http://www.philly.com/dailynews/columnists/joe_sixpack/20070525_Joe_Sixpack___Belgian_taverns_debuting_all_over.html "Belgian taverns debuting all over"]: "...Obviously that dish demands a hoppy beer (ba-dum), but she opted for a Three Philosophers from New York's [[Brewery Ommegang]], a powerfully satisfying quadrupel flavored with cherry [[lambic]]."</ref><ref>[http://www.slyfoxbeer.com/beerdetail.asp?beernumber=15 slyfoxbeer.com]</ref><ref>[http://www.weyerbacher.com/cwo.php?id=7&page_id=19 Weyerbacher Brewing Company QUAD]</ref><ref>[http://www.boulevard.com/smokestack/ Boulevard Brewing Company]</ref><ref>[http://www.midnightsunbrewing.com/beer_8PBvenus.php Midnight Sun 'Venus']</ref>
A quadrupel is intended to be stronger than a [[Tripel]], so the [[Alcohol by volume|ABV]] strength will be 10% or more. Beyond that, there is little agreement on the status of Quadrupel as a style.<ref>[http://www.beerscribe.com/category/quadrupel/ Beerscribe]</ref> Beer writer [[Tim Webb]] notes that similar beers are also called '[[Grand Cru (food and drink)|Grand Cru]]' in [[Belgium]] and Holland (by which he means the [[Netherlands]]).<ref>Webb, T. ''Good Beer Guide to Belgium'', 6th edition</ref>
