Lambic beer is a unique style of beer originating from the Brussels region of Belgium. It is known for its spontaneous fermentation process, where wild yeast and bacteria from the environment ferment the beer, giving it a distinct sour flavor. Lambics are often aged in wooden barrels, which adds complexity to their taste. There are several variations of Lambic beer, including Gueuze, which is a blend of young and old Lambics, and Fruit Lambics, which are infused with fruits like cherries or raspberries. These beers are typically unfiltered and can have a range of flavors, from tart and fruity to earthy and funky.