quadrupel

Quadrupel is the brand name of a strong seasonal beer La Trappe Quadrupel brewed by De Koningshoeven Brewery in the Netherlands, the only Trappist brewing abbey not in Belgium.Some brewers and beer writers within the United States use 'Quadrupel' or 'Quad' to refer to high-alcohol beers with the spicy, ripe fruit flavor profile found in some Trappist, abbey, or Belgian-style beers. Although some Trappist and Abbey breweries produce beers stronger than their Tripels (Chimay Bleu, St Bernardus Abt), Belgians tend not to use the term, preferring to use the naming conventions single or enkel, dubbel, and tripel. Some beer writers use the term barleywine to describe beers over 10 percent alcohol. The Dutch equivalent (gerstewijn) is sometimes also used in Belgium in the same context, but its use remains fairly rare.
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adj. quadruple, four times, fourfold