St. Bernardus Abt 12: The Beer the Monks Once Trained

A Village Most Belgians Have Never Heard Of

If you drive west out of Poperinge through the hop fields of West Flanders, past low brick farmhouses and rows of climbing bines on twine, you eventually arrive at a village called Watou. It has fewer than two thousand residents. The main square is small enough to cross in twelve paces. There is a church, a few cafés, a couple of frites stands, and the kind of slow Flemish quiet you only find in towns that the highway forgot. There is also, slightly outside the village center on a working brewery campus surrounded by hop bines, one of the most quietly important breweries in Belgian beer.

Brouwerij Sint-Bernardus has been brewing in Watou since 1946. It is not a Trappist brewery (there is no monastic community attached, and it does not wear the hexagon), but for forty-six years, from 1946 to 1992, it brewed beers under license from a Trappist abbey ten kilometers down the road. That abbey is Sint-Sixtus, in the hamlet of Westvleteren, and the beer most drinkers know it for is Westvleteren 12, frequently cited, by people who have actually managed to taste it, as the best beer in the world.

For nearly half a century, the beers we now call St. Bernardus and the beers we now call Westvleteren were brewed from the same recipes, with the same yeast, by brewers who had been trained at Westvleteren itself. When the license ended in 1992 and Sint-Sixtus took the production of Westvleteren back behind the abbey walls, St. Bernardus simply kept brewing the same beers under their own name. Today, Westvleteren 12 is sold in tiny quantities only at the abbey gate to drivers with appointments. St. Bernardus Abt 12 is sold in beer bars around the world. They are not the same beer anymore (different water, different fermentation tanks, four decades of small drift), but they are closer than any two beers from different breweries have any right to be.

That is the headline story. The full story is more interesting, and it begins not in 1946 but in 1900, with a group of French Trappist monks who had just been told by their government that they were no longer welcome at home.

A Refugee Cheese Factory

At the turn of the twentieth century, France passed a wave of anti-clerical laws that effectively closed many religious communities. Monasteries were shuttered. Orders were dispersed. A group of Trappist monks from the abbey of Mont des Cats in northern France, looking for a quieter country, crossed into Belgium and settled in Watou in 1902. They were not looking to brew beer. They were looking to support themselves quietly. So they did the most practical thing a community of working monks could do: they built a cheese factory. The Trappist Cheese Factory of Watou, the Refuge Notre-Dame de Saint-Bernard, opened in 1904 and produced the kind of pressed, washed-rind monastery cheese that Belgian Trappists have made for centuries.

By the 1930s, the political climate in France had changed. The Mont des Cats monks were welcome to return home. Most of them did. The cheese factory remained in Watou, but the monks were gone, and the operation passed into the hands of a lay director named Evariste Deconinck, a businessman with a head for cheese and an ear for what Belgian working people wanted to eat. He kept making cheese, and he kept the Saint-Bernard name. When the Second World War ended and the Belgian economy began to reassemble itself, Deconinck began looking for new opportunities.

Ten kilometers down the road, at the abbey of Sint-Sixtus in Westvleteren, the monks had a different problem. They had been brewing beer at the abbey since 1839, and their beer, particularly the strong dark ales, was popular enough that the demand far exceeded what a small monastic community could produce inside the cloister. They wanted to keep the brewery inside the abbey small. They did not want to expand. They did not want trucks and salesmen and bottling lines on monastic land. But they had a recipe and a yeast that the world wanted more of, and they had no interest in industrial expansion. What they needed was a partner outside the walls.

The Handshake of 1946

In 1946, the monks of Sint-Sixtus signed an agreement with Evariste Deconinck and the Saint-Bernard cheese factory. The terms were simple and unusually generous. Deconinck would build a brewery in Watou. The monks would license their recipes (the beers then called Sint-Sixtus 4, 6, 8, and the strongest, what would become Abt 12) and the brewery would produce them for commercial sale under the Saint Sixtus brand. The monks would continue brewing a small quantity at the abbey for themselves and for a handful of devoted customers willing to drive out to West Flanders to buy it at the door. Deconinck would handle the rest of the world.

More importantly, a Westvleteren brewer named Mathieu Szafranski, a Polish-born monastic brewer trained at Sint-Sixtus, left the abbey, brought the yeast strain with him in a glass jar, and joined Deconinck at the new brewery in Watou. He set up the brewhouse. He fermented the first batches. He passed on the knowledge of how to handle the recipes, how to manage the yeast, how to read the wort, how to know when a beer was finished. The brewing of Sint-Sixtus beers at Saint-Bernard was, in the truest sense, a transfer of monastic brewing into lay hands: sanctioned by the abbey, executed by a brewer trained at the abbey, with the abbey's own yeast.

For forty-six years, this arrangement worked beautifully. The Saint Sixtus beers produced at Watou (including Abt 12, the flagship strong dark ale) became some of the most prized beers in Belgium. Beer writers raved about them. Connoisseurs sought them out. The brewery quietly expanded. The cheese operation continued alongside it. The monks at Westvleteren remained content. The lay brewery handled the world, and the abbey handled itself.

Then, in 1992, the agreement quietly ended.

1992: The Friendly Divorce

The reasons for the end of the license were partly commercial and partly philosophical. The International Trappist Association, the body that would formalize the Authentic Trappist Product hexagon in 1997, was already coalescing in the early 1990s, and questions about what counted as truly Trappist beer were being raised across the industry. A beer brewed by a lay company under license from a monastery, sold under the monastery's name but produced miles away by people in street clothes, raised exactly the kind of definitional question the ITA was being built to answer. The monks of Sint-Sixtus saw the writing on the wall.

In 1992, the monks ended the license. They would take production of the Sint-Sixtus beers back inside the abbey walls. They would brew small quantities, only as much as the abbey itself could produce, and sell them only at the gate, by appointment, in limited amounts, with a strict no-resale policy that has held to this day. The brand became Westvleteren, after the hamlet rather than the abbey. The hexagon, when it was granted in 1997, went on the bottles.

St. Bernardus, meanwhile, was left with a brewery, a yeast strain, the recipes, and the right to keep using them, but not the right to call them Sint-Sixtus. They renamed the beers under their own brand: Pater 6, Prior 8, Abt 12. The numbers stayed the same. The recipes stayed the same. The brewers stayed the same. The yeast stayed the same. The only thing that changed was the label on the bottle and, importantly, the water: St. Bernardus draws from a well in Watou, while Westvleteren now uses water from inside the abbey grounds. The two beers, after 1992, began to drift very gently apart.

In 1998, the abbey and the brewery renewed their friendly relationship in a smaller way: the original yeast strain that Mathieu Szafranski had carried out in his glass jar in 1946 was getting old, and St. Bernardus needed a fresh culture. Westvleteren, by then brewing with a yeast that had been drifting for decades in its own direction inside the abbey, declined to share. St. Bernardus reformulated with a different yeast strain, chosen carefully to behave as similarly as possible to the original, and the gap between the two beers widened by another notch. It is still small. Drinkers in side-by-side tastings frequently struggle to tell Abt 12 from Westvleteren 12. But it is no longer zero.

There is a kind of mythology around Westvleteren 12 (the appointments at the abbey gate, the trunk loads of crates, the no-resale rule, the rotating Untappd reverence) that obscures something the locals of West Flanders know perfectly well: if you want to taste what Westvleteren tasted like for most of the twentieth century, you do not need to drive to the abbey. You can buy a bottle of St. Bernardus Abt 12 at any decent Belgian beer bar in the world. It is the same family of beer, brewed by the brewery the monks themselves built up.

The Grain Bill: Simple Bones, Patient Cooking

For all its reputation, St. Bernardus Abt 12 is built on a relatively simple grain bill. The base is a Belgian Pilsner malt: pale, clean, well-modified, the workhorse of West Flanders brewing. On top of that come modest amounts of darker malts: Munich for body and a touch of toasty depth, caramel and crystal malts for sweetness and color, and a small dose of debittered dark malt for color rather than for roasted character. There is no chocolate malt grit, no coffee-roast bite. This is a beer that wants to be dark and rich without ever crossing into stout territory.

The real architectural trick is the candi sugar. Belgian strong dark ales rely on dark Belgian candi sugar, caramelized invert sugar pushed to a deep amber-brown, to lift the gravity without adding so much grain that the body becomes thick and cloying. The candi contributes dried fruit, plum, raisin, brown sugar, and a soft burnt-toffee character that becomes one of the signatures of the finished beer. It also ferments cleanly out, which means it adds gravity without adding sweetness. The beer ends up at ten percent ABV, but it does not taste like a syrup.

Hops are present but quiet. A modest charge of European noble hops, typically Saaz and a small portion of Magnum, provides just enough bitterness to keep the malt and sugar in balance. There is no hop aroma to speak of. There is no hop punch. The hops in Abt 12 do their job in the kettle and then politely step aside so the malt and yeast can run the show.

The yeast is the engine. The St. Bernardus house strain, the one chosen carefully in 1998 to mimic the lost Westvleteren strain, is a classic Belgian abbey yeast that ferments warm and produces the soft banana-clove esters, the gentle phenolic spice, and the deep dried-fruit character that define the family. At ten percent, the yeast works hard. Primary fermentation runs for the better part of a week. Secondary conditioning runs for weeks more. The beer is bottle-conditioned with a fresh dose of yeast and a touch of priming sugar, so it carbonates inside the bottle and continues to develop in the cellar.

A Process Built on Watou Water and Patience

Walk through the St. Bernardus brewhouse today and you will see a brewery that has grown carefully without losing its identity. The brewhouse is modern but not industrial in the bad sense: it is sized for the volume the brewery actually needs, not for some future expansion that would betray the recipes. Stainless tanks. Clean lines. Hop bines climbing the trellises just outside the windows. The famous St. Bernardus rooftop tasting room, opened in 2018, looks out across the working brewery and the hop fields of West Flanders.

The mash for Abt 12 is single-infusion at a moderate temperature, warm enough to extract the rich grain bill cleanly, but not so hot that the beer ends up too sweet or too thin. The wort is boiled long, which caramelizes a portion of the sugars in the kettle and adds another layer of melanoidin depth to the finished beer. The candi sugar is added during the boil, dissolving cleanly into the wort.

Fermentation happens in cylindroconical tanks at warm Belgian temperatures, in the high sixties Fahrenheit, where the yeast throws off the most expressive ester profile. The first few days are violent: the krausen rises a foot off the wort, the tank vents like a stack, and the brewers monitor temperature carefully to keep the yeast from running too hot. By day five the fermentation calms. By day ten the beer has dropped most of its yeast and is ready to transfer to conditioning tanks.

In conditioning, the beer rests cool for several weeks. Tannins drop out. Yeast and hop residues settle. The beer clears and rounds. Then it is bottled with a small charge of fresh yeast and priming sugar and warm-conditioned again for secondary fermentation in the bottle. From mash to dock, the process takes about two months. From bottle to peak drinkability, you can add another six to twelve months in a cool dark cellar. Abt 12 is one of those beers that genuinely improves with age, and St. Bernardus prints a best-before date of three years, which most serious drinkers treat as a starting suggestion rather than an expiration.

The water matters. Watou sits in a chalky West Flanders aquifer, and the well that feeds the brewery draws moderately hard, well-mineralized water that suits dark malt extraction. This is one of the small but real ways St. Bernardus has always differed from Westvleteren: the abbey draws from its own ground ten kilometers away, with slightly different mineral content. The water is one of the reasons two breweries using the same recipes never made identical beer.

What's in the Glass

Pour St. Bernardus Abt 12 into the proper goblet and the first impression is one of weight. The beer is dark: deep mahogany verging on cola-black, with ruby highlights when held to the light. The head rises tall and stays. A thick off-white crown, two fingers high on a good pour, dense enough to hold a coin for several seconds and slow to fall. The lacing on the glass after the first sip is unmistakable: thick rings of pale foam clinging to the goblet on the way down.

The aroma is where Abt 12 starts to do its specific work. The first wave is fruit, dark, ripe, almost cooked: fig, prune, date, raisin, black cherry. Underneath that comes the malt: dark caramel, brown bread crust, a hint of fresh-baked rye, the sweetness of a good fruit cake. The yeast adds soft banana and a whisper of clove. There is alcohol on the nose, but it presents as a warm brandy or rum note rather than as a sharp burn. The whole bouquet has a peculiar coherence: every element seems to belong to every other element, as if the beer has been thinking about itself for a long time.

The first sip is full and round. Toffee arrives first, a deep, slow caramel sweetness that rolls across the palate. Behind it: plum and dried cherry, brown bread, candied date, a dusting of cocoa, a soft leather note. The yeast esters lift the middle palate with banana and clove. There is a faint pipe-tobacco character that comes through at warmer temperatures. Then, as the sip moves toward the back of the palate, the sweetness begins to dry. The candi sugar has done its work in the kettle; the yeast has done its work in the tank; this is a beer that finishes drier than its first impression promises.

The mouthfeel is one of the great pleasures of the style. The body is silky: chewy without being heavy, full without being syrupy. Carbonation is moderate and creamy, almost soft, lifting the body off the tongue rather than scrubbing it. Alcohol warms through the chest a few seconds after each sip, the way a good Cognac does. Abt 12 is a beer that asks to be sipped, not gulped, and rewards a slow pace by becoming more interesting as the glass warms.

The finish is long and contemplative. Toasted malt, raisin, dark caramel, and a soft alcohol warmth hang around for the better part of a minute after each sip. There is no abrupt closure. Abt 12 doesn't snap shut at the end. It dissolves, slowly, like a chord with a long sustain. Drink one over an hour and you will notice it changing in the glass: cold from the bottle it is bright and fruity; warm at the end it is dense, port-like, and almost meditative.

The Glass: The St. Bernardus Chalice

St. Bernardus Abt 12 is served in a wide-bowled stemmed chalice: heavy, footed, and shaped like a tulip pressed slightly open at the top. The brewery's branded chalice is one of the more elegant pieces of glassware in Belgian beer: thick stem, generous bowl, and the saint's image etched discreetly on the side. Every part of the design is functional. The wide bowl gives the head room to build and the aromatics room to develop. The slight inward curve at the rim concentrates volatiles toward the nose. The thick stem keeps your hand off the bowl, which matters for a beer best served at cellar temperature.

Serving temperature for Abt 12 is 50-55°F (10-13°C), cool but not cold. Too cold and the malt complexity flattens, the dark fruit retreats, and the alcohol presents as harsher. Too warm and the beer turns syrupy and the alcohol gets blowsy. The sweet spot is cellar-cool, which is just below refrigerator temperature. If you pull a bottle from the fridge, let it sit on the bar for ten minutes before pouring.

Pouring is a slow business. Tilt the glass to forty-five degrees, pour gently down the side, and straighten the glass as the beer rises. Abt 12 is bottle-conditioned, which means there is yeast sediment at the bottom of the bottle. The traditional approach is to leave the last half-inch behind so the yeast doesn't cloud the glass. Some drinkers prefer to pour the yeast in for the extra B-vitamin character and the slightly fuller body. Both approaches are correct. We pour the body of the beer first and ask the customer whether they want the lees.

What to Eat With It

Abt 12 is a dinner beer, a dessert beer, and an after-dinner beer all in one. The high alcohol and rich malt structure stand up to almost any heavy dish you put in front of them. Its dark fruit character mirrors red wine pairings: think roasts, braises, slow stews. Belgian carbonnade, beef stewed in dark beer with onions and a slice of mustard-rubbed bread, is so harmonious with Abt 12 that you can plausibly cook the stew with the same bottle you plan to drink. A good roast duck with cherry or fig sauce, a slow-braised short rib, a wild boar ragu over pappardelle: all classic matches.

For cheese, lean older and harder. The Watou Trappist cheese still made in Watou itself, the descendant of the very cheese factory the monks built in 1904, is the natural local match. Aged Gouda with crystallized edges plays the salt against the candi sugar. A really sharp aged Cheddar plays the bitter against the sweet. Blue cheeses work if they have the punch to stand up to ten percent abbey ale: Roquefort, Stilton, Fourme d'Ambert. Anything mild gets steamrolled.

Dessert is where Abt 12 becomes almost uncanny. Dark chocolate, particularly bittersweet at seventy percent cacao or above, finds an echo in the beer's cocoa-nib edge and dark fruit. Sticky toffee pudding is essentially Abt 12 served with a spoon. A walnut and fig tart with a small dollop of mascarpone is a textbook match. Tiramisu, surprisingly, works beautifully: the coffee and cocoa speak to each other across the table. If you ever find yourself ordering Abt 12 and a slice of warm pecan pie in the same sitting, you have done something right.

How We Serve It at Mort Subite

St. Bernardus Abt 12 at Mort Subite is treated with the gravity a ten-percent Belgian dark strong deserves. The chalice comes out of the back bar clean, dry, and at room temperature, never frosted. Frosted glassware kills the head, mutes the aromatics, and is, in this bar's view, an act of small violence against good beer. We pull the bottle from refrigerated storage, set it on the bar to take the chill off, and crack it open in front of the customer so the cap goes onto the bar with a satisfying click.

The pour is slow. Forty-five-degree tilt at the start, building the beer up the side of the glass, straightening the chalice as the meniscus rises and the head builds in a thick off-white crown. We stop a half-inch short of the bottom of the bottle, where the yeast sediment lives, and we pause to ask whether you want the lees. Yes is a perfectly good answer. So is no. Either way the beer that ends up in your glass is honest.

We serve Abt 12 late afternoon and evening. It is not a noon beer. It is the beer you order after dinner, when the room has dimmed and the conversation has slowed and someone at the table wants something with more weight to it than the second tripel they were thinking about. We pair it most often with our cheese board, particularly the aged Gouda and any Trappist cheese on the boards that week, and with the carbonnade when it's running on the kitchen menu. We also serve it as a digestif on its own, no plate required, in a quiet corner of the bar with a small glass of water alongside it.

There is a conversation that comes up every few weeks at the bar when somebody orders Abt 12 for the first time and a more experienced drinker leans over and says: "You know this is basically Westvleteren 12, right?" The honest answer is more interesting than the simple one. For forty-six years they were the same beer, brewed from the same recipes, with the same yeast, by brewers trained at the same abbey. Since 1992, they have drifted: slightly, gently, but really. A side-by-side tasting reveals two beers from the same family with subtle differences: Westvleteren a touch drier and more austere; Abt 12 a touch richer and more openly fruity. Both are extraordinary. Only one of them is available without a trip to West Flanders. We are happy to pour the one you can actually get.

A word on pace: ten percent ABV in a 330 ml bottle is a real glass of beer. Drink it slowly. Let it warm. Talk between sips. Abt 12 is not a beer that wants to be hurried, and the people who hurry through it are the ones who go home wondering why they suddenly feel so sideways. Two of these over an evening, with food, is plenty for almost everyone, and it should be, because each glass is doing real work for you in flavor and in alcohol both.

Check the draft menu, or ask the bar what is on today. Come meet the beer the Westvleteren monks once trained, and the brewery in a hop village that kept their recipes alive.