Birth of Ace is back on tap in Lost Rhino's tasting room. This time around we dry hopped it with Amarillo, Citra, and El Dorado. If you're unfamiliar with Birth of Ace, it's our IPA fermented with Brettanomyces. So, what is "Brettanomyces"? First, let's take a quick look at brewer's yeast, or "Saccharomyces cerevisiae" (for all you Spanish speakers out there, the similarity between "cerevisiae" and "cervesa" is not a coincidence). The Saccharomyces cerevisiae family is large and the vast majority of ales (lager yeasts are also in the Saccharomyces genus, but the specific family of lager yeasts is referred to with the Latin name of Saccharomyces pastorianus) are fermented with yeast strains from this family. OK, fine, but we still haven't gotten to Brettanomyces (colloquially this group of yeasts is referred to as "Brett"). Brett is the wild (it is commonly found on the skins of fruit) counterpart to Saccharomyces, i.e, it also turns wort (unfermented beer) into beer. Brett is also similar to the Saccharomyces family in that there are many varieties of Brett. In terms of practical usages, Brett yields a funkier beer than strains from the Saccharomyces genus--sometimes creating sour notes, sometimes yielding an earthy beer, and sometimes bringing aromas and flavors reminiscent of "horse blanket" . In terms of fermentation length, Brett is much slower than ale yeasts--Birth of Ace was brewed in December 2013 but wasn't ready to be kegged until the end of May 2014 (the current batch is also from that December 2013 brew). Are you a little bit curious about beers fermented with Brett now? Birth of Ace will only be on tap for a limited time so come give it a shot soon!