As big fans of geuze-style beers, we wanted to give our own spontaneous fermentation beer a go. To our own surprise, with success. Aside from our own Spierelambiek - our spontaneously fermented beer named after a tiny river that runs near the brewery - we use two traditional lambieks from the valley of the Senne (close to Brussels) to make a blend. One, two and three year old lambieks are used in Mirakel, our own miracle.