Brouwerij 3 Fonteinen is one of the most respected and authentic Belgian breweries specializing in the production of lambic and geuze beers, located in Beersel, just outside Brussels. It was founded in 1883, originally as a tavern named after the “three fountains”, which later became the name of the brewery itself.

Over the decades, it evolved from a simple pub into a guardian of traditional Belgian brewing craftsmanship rooted in spontaneous fermentation. The production process remains faithful to centuries-old methods: after boiling, the wort is cooled in a large open vessel called a "coolship", where it is exposed to the natural microflora of the environment, allowing for spontaneous fermentation without the use of cultured yeast.

The beer then matures in large oak barrels and is carefully blended - often from different vintages - based not on strict recipes but on the experience, knowledge, and intuition of the master blenders. Brouwerij 3 Fonteinen does not filter or pasteurize its beers, keeping them alive and allowing them to evolve in the bottle.

Today, Brouwerij 3 Fonteinen stands as one of the world’s most esteemed producers of geuze and lambic, preserving tradition while continuously exploring new frontiers of flavor through innovation in fermentation, blending, and aging.