Belgian chicory: the vegetable born twice
It seems so familiar that we almost forget to look at it. Yet Belgian chicory is a small agricultural puzzle: it does not grow like other vegetables. It first has to live in the open field, be lifted, then begin growing again in darkness. Without that second start, there would be no tightly packed white leaves, no delicate crunch and no chicory as we know it.
This double life makes it one of the most distinctive products in Belgian cooking. Its story begins in Brussels, continues in market gardeners' cellars and now appears in everything from a simple family gratin to the dishes of leading chefs.
The vegetable with two lives
It all begins with a chicory plant. Its seeds are sown outdoors in spring. For several months, the plant develops long green leaves, but the grower is chiefly interested in what happens underground: a large root gradually stores reserves.
In autumn, that root is lifted. The leaves are cut, then the roots are placed upright, very close together, in a bed of soil or a forcing system. They are supplied with moisture and a suitable temperature while being kept in complete darkness.
The root then uses the reserves accumulated during its first life to produce a new shoot. Deprived of light, it makes almost no chlorophyll: it stays ivory, with only a pale yellow tip. The leaves close together to form the compact little pointed head Belgians call a chicon.
A Brussels invention of the 19th century
Chicory has been known for centuries, for both its leaves and its root. The compact chicon, however, is much more recent. It emerged in north-eastern Brussels in the mid-19th century.
Several accounts circulate, but the explanation now considered most plausible attributes its development, around 1840, to François or Franciscus Bréziers, head gardener of the Botanical Garden near the Schaerbeek Gate in Saint-Josse-ten-Noode. By selecting the best plants and refining cultivation in darkness, he is thought to have helped gradually produce a white, closed, uniform vegetable.
The Flemish word ‘witloof’ tells the story on its own: it literally means ‘white leaf’. French-speaking Belgians commonly call it chicon. In France, the same vegetable is generally called endive, while the English expression ‘Belgian endive’ clearly recalls its country of origin.
The story: a hidden treasure during the Belgian Revolution
Legend has it that a grower hid chicory roots in a cellar during the unrest of 1830. On returning, he supposedly discovered tender white shoots. The story is unproven, but it captures chicory's secret perfectly: a root, a little moisture, warmth and, above all, no light.
It should therefore be told as a legend, not a historical certainty. It is nevertheless fascinating, showing how an agricultural technique can emerge from a simple observation: a plant deprived of light no longer behaves in the same way.
A secret long kept around Brussels
Belgian chicory did not immediately spread across Europe. For several decades, cultivation remained heavily concentrated around Schaerbeek and Evere. Archives devoted to this heritage show that, before the 1870s, growers were still mainly located in those municipalities.
The vegetable quickly won over Brussels' bourgeoisie, and demand grew. As the city expanded, market gardeners had to move away from the capital, and production gradually spread into Brabant. This movement explains why chicory remains deeply associated with Brussels even though commercial cultivation now takes place chiefly outside the city.
Why darkness changes everything
The absence of light does more than keep the leaves white. It shapes the product's whole personality. Forced chicory develops a tender yet crisp texture, a high water content and a distinct bitterness that is far more nuanced than we might imagine.
That bitterness is precisely what interests cooks. Raw, it livens up a salad and works beautifully with apple, walnuts or a characterful cheese. Cooked, chicory softens, concentrates its juices and takes on an almost caramelised sweetness. A touch of acidity, meat juices or a creamy sauce can then play on contrasts rather than try to erase its flavour.
From everyday vegetable to a chef's ingredient
Chicory gratin, wrapped in ham and covered in sauce before baking, remains its most famous role in Belgian cooking. But the vegetable can do much more. It can be braised whole, roasted, sautéed in butter, served as raw leaves, made into a velvety soup or paired with seafood.
The small leaves can even become natural holders for an appetiser. Their hollow shape carries a filling, while freshness and gentle bitterness keep the bite from feeling heavy. It is a simple detail, but typical of products equally at home in a household kitchen or a restaurant.
One root for one fine head
Here is another little-known feature: when chicory is harvested, the head is separated from its large root. The root then loses its main growing point and will not produce a second comparable head. It can still be put to use, notably as animal feed or compost, but all the grower's work has gone into producing that single chicon.
That changes how we look at a vegetable sold individually or by weight. Behind every small white head lie months of outdoor cultivation, lifting, careful root preparation and a second period of growth entirely controlled in the dark.
An everyday Sunday favourite worth rediscovering
Belgian chicory is sometimes a victim of its own familiarity. We think we know it because it has accompanied Belgian winters for generations. Yet few vegetables have such a recent history, such local origins and such a surprising production method.
Next time you cut into one, look at its tightly packed white leaves. They are not simply a salad plant's natural form: they are the result of a second birth, orchestrated in darkness. Perhaps that is where the true magic of Belgian chicory lies.
