Horal's Oude Geuze Megablend symbolizes the collaboration between the lambic breweries and Gueuze blenders from the Zenne valley and the Pajottenland. As many as 10 Lambic producers united under HORAL blended their Lambic together into an Oude Geuze. The mixture contains Lambic that has matured in wooden barrels for 1, 2 and 3 years when the bottles are filled.