Cantillon Brewery: How Brussels Kept Its Lambic Tradition Alive

INTRODUCTION

A Brewery Built Around Waiting

In the loft at Cantillon Brewery, a broad, shallow vessel takes up much of the room. It is a coolship. After a brew, hot liquid goes into it and cools overnight. The barrels elsewhere in the building are for a much longer wait, measured in seasons and sometimes years.

At this family brewery in Anderlecht, the rooms explain why lambic takes time. They also tell the story of a business that began by blending other brewers’ beer, took up brewing itself and eventually opened its doors to the public when demand dwindled.

The Brussels Museum of the Gueuze shares the building with the brewery. A visit follows the work from the brewing vessels to the barrels and, finally, to the glass.

KEY HISTORICAL MOMENT

1978 · A Working Museum Opens

In 1978, brewer Jean-Pierre Van Roy and a group of supporters set up the Brussels Museum of the Gueuze as a non-profit. Cantillon was struggling to sell a beer that had fallen out of fashion. Tours, exhibitions and public brewing sessions gave people a reason to come to Rue Gheude and see the equipment in use.

ORIGINS

The Business Began with Blending

A Family Beer Merchant

Paul Cantillon and Marie Troch started their business in Anderlecht in 1900. They bought lambic from other producers, then blended and sold it. A merchant needed room for barrels and enough stock to choose among beers of different ages. The skill lay in deciding which to put together and when.

The business took over a beer depot on Rue Gheude in the early twentieth century. The street had several such depots and workshops behind its houses. A walk along it puts Cantillon in the context of Cureghem, a part of Anderlecht where manufacturing and storage fitted into the same blocks as homes.

Brewing on Rue Gheude

Paul’s sons, Marcel and Robert, helped turn the blendery into a brewery in the late 1930s. The family acquired second-hand equipment in 1937 and added brewing space behind the street buildings. Making their own lambic brought the work of mashing, boiling and cooling onto a site that already had room to store and blend beer.

MAKING LAMBIC

From Mash to Wooden Cask

Grain, Hops and a Cool Night

Lambic begins with malted barley and unmalted wheat. Hot water and grain make a mash. The brewer draws off the sugary liquid, called wort, and boils it with aged hops. Ageing takes the edge off the hops’ bitterness, which would otherwise compete with the character of the finished beer.

The wort then goes into the coolship. Its broad surface allows heat to escape, and the liquid is exposed to the brewery environment as it cools. Cantillon uses the colder part of the year for this stage. The weather matters because the wort needs to cool sufficiently overnight.

Fermentation in the Cask

The cooled wort goes into wooden barrels. Fermentation starts with yeasts and bacteria from the brewery environment, which includes the equipment and casks as well as the air. Different organisms become active as the beer develops. Yeasts produce alcohol, while bacteria contribute acidity.

As the lambic matures, barrels can develop differently even if they started with the same brew. A blender works with those differences. Tasting the casks is part of deciding which beer should age longer, which can be served on its own and which can contribute to a blend.

ACROSS CENTURIES

Keeping the Brewery Working

When Demand Fell

By the time Van Roy took on the business around 1970, traditional lambic had lost much of its market. The long production cycle made a fall in sales especially hard for a small brewer. Space and barrels were tied up for months or years before their contents were ready to sell.

The museum put that time to use in a different way. On a tour, a row of casks became a way to explain why the brewery needed stock from several seasons. A public brew made it possible to show work that most customers had previously encountered only as a finished bottle.

A New Audience for Lambic

The brewery credits the museum with spreading its reputation beyond Belgium. Visitors could see how the beer was made and then compare it in the tasting room. The equipment had a practical reason to stay in the building. It continued to serve the people making the beer even as it became part of the museum visit.

Jean Van Roy joined his father in 1989. He recalled that in his first season the brewery increased its output from nine brews to twelve. By the early 2000s, he and his father were seeing interest grow in markets including Japan, Finland and the United States.

INTERESTING FACTS

Four Details Behind the Beer

Where Gueuze Gets Its Fizz

At Cantillon, younger lambic supplies sugars for a second fermentation in the bottle. Older lambic brings flavours developed over a longer period in wood. Yeast works on the remaining sugar after bottling, and the carbon dioxide it produces stays in the sealed bottle. That is where gueuze gets its sparkle.

Cherries Go into the Beer

Cantillon makes its kriek by steeping sour cherries in mature lambic. Over several months the beer takes on colour and flavour from the fruit. A younger lambic is then added to support fermentation in the bottle. The cherry harvest can differ from year to year, and so can the balance of fruit and beer in the glass.

Grapes from a Brewing Tradition

Brewers and beer merchants around the IJse valley once made grape lambic with fruit grown in local greenhouses. Jean-Pierre Van Roy tried white grapes in lambic in 1973. Cantillon later called the beer Vigneronne. The experiment drew on a regional tradition and gave the brewery another way to use its stock of maturing beer.

What Researchers Found in Casks

Researchers followed two batches at Cantillon over two years. They found that the communities of yeasts and bacteria changed during fermentation and maturation. Later research on lambic showed that wooden barrels can themselves supply microorganisms to a new batch. The wood is part of the environment that helps shape the beer.

WHAT TO SEE & DO

Four Stops Inside Cantillon

Start with the Copper Vessels

In the brewing area, look for the copper vessels and use the tour notes to distinguish mashing from boiling. This is the hot side of the process, where the brewer extracts sugars from the grain and prepares the wort for cooling.

The vessels are useful to see even between brews. Their position in the building helps you follow a batch from the brewhouse towards the loft.

Look Across the Coolship

At the coolship, notice the contrast between the width of the vessel and its shallow sides. The shape exposes a large surface to the air. Look at the louvres that admit outside air. The vessel and the openings in the loft work together during cooling.

On an ordinary visit, you may see the vessel empty. For a chance to see wort pumped into it, check Cantillon’s public brewing programme.

Read the Barrel Store

In the barrel area, look at how much of the brewery is given over to storage. Some of the casks are old, but the beer in them belongs to the current production cycle. The tour notes explain how long it can stay there. Think about the different ages of beer a blender needs on hand at any one time.

This is where the work of a single day begins to occupy space for years. The number of barrels helps explain why blending starts with a choice of stocks.

Compare the Tasting Samples

At the end of the self-guided tour, Cantillon serves lambic, gueuze and a fruit blend. If you take part in the tasting, compare the carbonation in the first two. Then see what the fruit adds to the third sample.

The comparison ties the names back to the work you have just seen. Each glass represents a different decision about what to do with the beer after it has spent time in wood.

WHY VISIT?

See the Work Behind the Glass

Cantillon suits anyone who likes seeing how a small producer uses an old industrial building. The loft, barrel rooms and bottle storage make the timetable of lambic visible. You can follow what happens on a brewing day and see how much space is needed for the stages that come afterwards.

The brewery also makes a good starting point for looking at the workshops and former depots of Cureghem. Cantillon’s visitor page links to a walk between the historic centre and the brewery. For other stops along the way, use the Travel4History guide to Brussels.

PRACTICAL INFORMATION

Visiting Cantillon Brewery

Where to Find It

The brewery and museum share an entrance at 56 Rue Gheude in Anderlecht. From Brussels-Midi, also signed Brussel-Zuid, continue on foot into Cureghem. The address may appear in Dutch as Gheudestraat. If you are starting in the historic centre, the brewery’s Lambic Stroll gives you a route from Grand-Place to the door.

Tours and Reservations

The official visits page lists self-guided tours on selected weekdays, with tickets bought on arrival. Saturday guided tours require online booking. Groups of more than ten need to arrange a private tour, and Cantillon asks for at least two weeks’ notice. Check the page for current opening days, admission and holiday closures before setting out.

How Long to Allow

Cantillon allows about an hour for a self-guided tour with tasting and about an hour and a half for a Saturday guided tour. If you are planning to see brewing in progress, check the events page for public brewing sessions and their separate schedules.

Stairs and Production Areas

The visit takes place in a working brewery and includes upstairs areas. Ask Cantillon directly about access to the rooms you want to see if stairs are a concern. Brewing, bottling and barrel work follow the production schedule, so the activities visible during a regular tour vary with the day.