Visit the Cantillon Brewery, near the Midi train station. This fine brewery produces gueuze, a sour and even sulphurous beer which is allowed to ferment spontaneously by contact with wild yeasts in the air. It's a love-it-or-hate-it thing - and you won't find out which it is for you unless you visit the brewery!
Send your feedback or queries to been.there@guardian.co.uk
Search Been there