Trappist Monks and the Beer They Brew: The Rules That Actually Matter

“Trappist” is one of the most misused words in beer marketing, and also one of the most strictly protected. Only a small number of breweries in the world are legally entitled to put it on a label, and the rules for qualifying have nothing to do with taste or style. Here is what the term actually means, who gets to use it, and how to tell a real Trappist beer from something just borrowing the aesthetic.

Orval Abbey in Belgium, one of the Trappist monasteries that brews beer
Orval Abbey, one of six Belgian monasteries brewing genuine Trappist beer.

Who Actually Gets to Call Their Beer Trappist

The Trappists are a Catholic monastic order formally known as the Cistercians of the Strict Observance. In 1997, eight Trappist abbeys, six in Belgium (Orval, Chimay, Westvleteren, Rochefort, Westmalle and Achel), one in the Netherlands (Koningshoeven) and one in Germany (Mariawald), founded the International Trappist Association specifically to protect the term from misuse. Today the ITA runs the “Authentic Trappist Product” (ATP) label, which now covers around a dozen breweries worldwide, including newer additions outside Europe, and it applies to more than just beer: bread, cheese and liqueurs from Trappist monasteries can carry it too.

The Full List Today, and Who’s Dropped Off It

The membership list is not fixed, and it has actually shrunk in places even as it grows elsewhere. Achel Abbey in Belgium lost its Authentic Trappist Product certification in 2021 after the last resident monks left and the community could no longer meet the “brewed within the walls, under monastic control” requirement. The Spencer Brewery in Massachusetts, the only Trappist brewery ever certified in the United States, closed in 2022, ending Trappist beer production in America entirely, at least for now. The current roster of ATP-certified beer producers looks like this:

BreweryAbbeyCountryKnown for
ChimayScourmont AbbeyBelgiumRed, White (Tripel) and Blue, the most widely exported Trappist range
OrvalOrval AbbeyBelgiumSingle dry-hopped pale ale conditioned with wild Brettanomyces yeast
RochefortNotre-Dame de Saint-RemyBelgium6, 8 and 10, numbered by gravity, among the strongest dark Trappist ales
WestmalleWestmalle AbbeyBelgiumThe original Tripel and Dubbel, both still the benchmark for their styles
WestvleterenSint-Sixtus AbbeyBelgiumReservation-only sales direct from the monastery, no retail distribution
La TrappeKoningshoeven AbbeyNetherlandsThe largest and most experimental range, including barrel-aged and isolator bock editions
Mont des CatsMont des Cats AbbeyFranceA single Trappist ale, currently brewed under license at Chimay rather than on-site
Stift EngelszellEngelszell AbbeyAustriaGregorius quadrupel at 10.5% ABV, Austria’s only Trappist brewery
Tre FontaneTre Fontane AbbeyItalyA Tripel conditioned with eucalyptus leaves grown on the abbey grounds
CardenaSan Pedro de CardenaSpainSpain’s Trappist beer, currently produced off-site

The Rules That Actually Matter

To use the ATP label, a beer has to meet three conditions according to the International Trappist Association. It must be brewed within the walls of an active Trappist monastery, either by the monks themselves or under their direct supervision. The brewing decisions have to answer to the monastic community rather than a separate commercial owner. And the profits have to go toward the monks’ living expenses and to social and charitable causes, not to outside shareholders. None of those rules say anything about the beer’s ingredients, strength or style, which is why Trappist beer covers everything from Westmalle’s dry, hoppy tripel to Chimay’s dark, fruity strong ales.

Sign at Sint-Sixtus Abbey, brewer of Westvleteren, listing visiting and purchase rules
A sign at Sint-Sixtus Abbey, home of Westvleteren, one of the hardest Trappist beers to actually buy.

Abbey Beer Is a Different, Looser Category

A lot of Belgian beer labeled “abbey beer” has no connection to an active monastery at all. Some abbey beers are brewed under license from a monastery that no longer brews itself, some simply use monastic branding and imagery without any formal relationship, and none of them can legally use the word “Trappist.” If a label says “Trappist,” it has met the ITA’s rules. If it says “abbey” or shows a monk on the label without the Trappist name, it is worth checking further before assuming any monastery is actually involved.

The Beer Itself

Despite the shared brewing setting, Trappist beers do not share a single house style. Westmalle is credited with essentially defining the tripel style with its Tripel, first brewed commercially in 1934, and its Dubbel is considered the benchmark for that style too. Chimay is probably the most internationally available and covers dubbel, tripel and dark strong ale within one range, detailed in our Chimay Red, White and Blue guide. Orval stands apart from the rest of the group entirely: it is dry-hopped and bottle-conditioned with Brettanomyces, a wild yeast strain most breweries deliberately avoid, which gives it a tart, increasingly dry character that shifts noticeably the longer a bottle sits before opening. Rochefort, brewed at Notre-Dame de Saint-Remy Abbey, numbers its three beers 6, 8 and 10 by original gravity rather than by style name, with Rochefort 10 landing among the strongest dark Trappist ales at around 11.3% ABV. Westvleteren, brewed at Sint-Sixtus Abbey, is famously difficult to buy at all since the monastery only sells through reservation and limits quantities to discourage resale, which has made its Westvleteren 12 a near-mythical bottle among beer collectors. For a wider look at how these sit alongside Belgium’s non-Trappist abbey beers and strong ales, our Belgian beer brands roundup covers the rest of the field.

Outside Belgium, the character of Trappist beer gets even more varied. La Trappe, brewed at Koningshoeven Abbey in the Netherlands, is the largest Trappist brewery by volume and the most willing to experiment, releasing barrel-aged editions and an amber ale alongside the more traditional dubbel and tripel styles most drinkers expect. Stift Engelszell in Austria makes Gregorius, a 10.5% ABV quadrupel that is one of the strongest standard-range Trappist beers brewed anywhere. Tre Fontane Abbey outside Rome takes the most unusual approach of any Trappist brewery: its Tripel is conditioned with eucalyptus leaves grown on the abbey’s own grounds, a detail tied to the monastery’s history of planting eucalyptus trees in the 1870s to help drain and purify malaria-prone marshland nearby.

Want to try a genuine Trappist ale?
Orval Trappist ale bottle next to its distinctive glass
Orval, the Trappist outlier, dry-hopped and conditioned with wild Brettanomyces yeast.

FAQs

How many Trappist breweries are there?

The International Trappist Association, founded in 1997 with eight member breweries, now recognizes around a dozen breweries worldwide holding the Authentic Trappist Product label, including newer ones outside Europe.

Is “abbey beer” the same as “Trappist beer”?

No. Trappist is a legally protected term that only applies to beer brewed within an active Trappist monastery under the monks’ supervision. Abbey beer is a broader, unprotected category that may have no direct monastic involvement at all.

Why is Westvleteren so hard to buy?

Sint-Sixtus Abbey, which brews Westvleteren, deliberately limits sales to reservation-only purchases directly from the monastery, specifically to avoid large-scale commercial distribution and discourage resale at marked-up prices.

Do Trappist monks brew the beer themselves?

It varies by monastery. Some breweries are run day to day by lay employees under the monks’ supervision and financial oversight, while the monks themselves are more directly involved in others. Either way, the monastic community has to hold ultimate control for the beer to qualify.

Has any brewery ever lost its Trappist certification?

Yes. Achel Abbey in Belgium lost its Authentic Trappist Product status in 2021 once the last resident monks left, since a monastery without an active community cannot meet the ITA’s core requirement. The Spencer Brewery in Massachusetts, the only US Trappist brewery, closed in 2022.

Which Trappist beer is the strongest?

Rochefort 10 and Stift Engelszell’s Gregorius quadrupel both sit around 10.5 to 11.3% ABV, making them the strongest beers in regular production among the certified Trappist breweries.

Dan Smullen Beer is my life profile

Hi, I'm Dan, founder of BeerIsMyLife. I've been an avid homebrewer for over ten years, and beer is my true passion. I've traveled all over the world, visiting breweries, tasting beer, as well as making my own batches. I set up this blog to share that experience with you.