Gueuze (dutch geuze, pronounced [ˈɣøzə]; french gueuze, [ɡøz]) is a type of lambic, a belgian beer. it is made by blending young (1-year-old) and old (2- to 3-year-old) lambics, which is bottled for a second fermentation. because the young lambics are not fully fermented, the blended beer contains fermentable sugars, which allow a second fermentation to occur. due to its lambic blend, gueuze has a different flavor than traditional ales and lagers. because of their use of aged hops, lambics lack the characteristic hop aroma or flavor found in most other beers. furthermore, the wild yeasts that are specific to lambic-style beers give gueuze a dry, cider-like, musty, sour, acetic acid, lac...

Source: Wikipedia