Definition: Geuze

A strong Belgian beer that has undergone a second fermentation. It is made by blending older lambics (aged 1 to 3 years in oak barrels), which are more acidic and flat, with younger lambics, which are more fruity and sparkling. The residual sugar in the latter allows for a second fermentation in the bottle. The brewer's skill lies in blending the vintages to produce a well-balanced geuze that is moderately fizzy and not too sour.