Spontaneously fermented wild ales from the area in and around Brussels (the Senne Valley) stem from a farmhouse brewing and blending tradition several centuries old. The number of producers is constantly dwindling and some are untraditionally sweetening their products (post-fermentation) with sugar or sweet fruit to make them more palatable to a wider audience. Fruit was traditionally added to lambic or gueuze, either by the blender or publican, to increase the variety of beers available in local cafes.