Spontaneous fermentation: magic words to anyone who loves wild, sour, aged beer full of brett, bugs and lactic acid. A method characterized by the fact that no yeast is actively added by the brewer. It’s mainly known for lambic, that wonderful Brussels beer which, after having aged for a few years, is used for making gueuze, faro and kriek. But what if I tell you that once there was another spontaneously fermented Belgian beer type, but one that was considerably different? One whose distant relative is still available on every corner in Belgium?