Thanks to the bad breath of the people of Brussels.

A person from Brussels, the so-called 'Brusseleer’, will occasionally start to fight or sing spontaneously, but will rarely start fermenting spontaneously. No, only Lambiek does this. If wort is exposed to the open Brussels air, it does not start coughing, but spontaneously produces fireworks of yeast due to the fungi and Brussels bacteria which only hang around the Zenne valley. And what a bad smell. But after maturing for three years in old wine casks, you get the most wonderful beer. It made De Prins forget about his bad chemistry marks. Watch them grow, the 'ketje*' bacteria in the film on the website. (*nickname for the inhabitants of Brussels)