Oude Geuze 3 Fonteinen is a completely natural geuze consisting of an assembly of one, two and three year old lambic aged in oak barrels. This geuze is a natural, unfiltered beer after bottling for at least six months spontaneously fermented in the bottle. Oude Geuze Drie Fonteinen can be kept in a stable, cool cellar for 10 years after bottling date. Oude Geuze which is kept is softened in terms of acidity but gets more complex taste notes.