3 Fonteinen Cuvee Armand & Gaston '153 Fonteinen Oude Geuze Cuve Armand & Gaston is a blend of one , two , and three year old traditional lambics, all brewed at Brouwerij 3 Fonteinen. Spontaneous fermentation, patient maturation in oak barrels, and continued evolution in the bottle result in a distinctively complex beer. No two bottlings are alike, as there are multiple variables in the blending process, a variety of barrel sizes and shapes, differences in aged lambic proportions, etc.