Strains of brettanomyces , or brett for short, are traditionally found in aged Belgian beers. These strains can be used to add additional flavor, acidity, and complexity to beers. Modern brewers have found a new role for these yeast in the production of 100% brett beers. All of these strains have the ability to breakdown complex sugars and attenuate beers beyond the usual limits. Additional cleaning and safety measures should be implemented to prevent cross contamination in your facility.