White Labs Brettanomyces Lambicus High intensity Brett character. Defines the "Brett character": Horsey, smoky and spicy flavors. As the name suggests, this strain is found most often in Lambic style beers, which are spontaneously fermented beers. Also found in Flanders and sour brown style beers. 75-80% attenuation with low flocculation. White Labs brett Lambicus likes to ferment at 85F or higher