Brouwerij Boon is a renowned Belgian brewery located in Lembeek, a town near Halle, in the Flanders region of Belgium. Established in 1978 by Frank Boon, the brewery specializes in traditional Belgian sour beers, particularly lambics. Lambic beers are unique because they are spontaneously fermented, a process in which wild yeast and bacteria from the environment are used for fermentation instead of cultivated yeast.