When the first regular breweries were founded in the Middle Ages, beer filtration was not a common technology and few mastered it. Among these few were the Fathers of Grimbergen Abbey, who became renowned experts in craft brewing. Their masterpiece was the filtrated Grimbergen Blonde – a pure, smooth, blonde ale with ripe fruit flavours and no cloudiness – that stood out from other beers of the time. Today, it’s still an insider tip among beer connoisseurs around the world. [update]