Biotransformation are flavor- and aroma-releasing reactions during brewery fermentation.  Lately, there has been much discussion of biotransformation in hoppy beers like IPAs where bound thiols are released when yeast interacts with them.  So hops provide not only bittering acids and flavorful oils, and yeast provides not only alcohol and esters, but the combination of yeast interacting with hop chemicals (and sometimes malt chemicals) produces new flavors.  New research into biotransformation is causing brewers to reexamine how they use hops, how they choose malts and how they ferment. This Episode is Sponsored by: Estrella GaliciaEstrella Galicia is an independent, family-owned brewery  in northwest Spain, founded in 1906. Estrella Galicia Cerveza Especial is a world class lager, brewed using the finest Spanish malts, locally  cultivated Galician hops and the best brewing practices, in a state-of-the-art facility in La Coruña . Recognized around the world for quality and exceptional character. Estrella Galicia is “A beer like no other.” The Best of Craft Beer AwardsAttention brewers: registration is now open for the 2024 Best of Craft Beer Awards. Now in its 10th year, this is a BJCP sanctioned event judged by fellow brewers, professional judges, and industry leaders. Judged in Oregon, it’s the third largest professional brewing competition in North America and is a chance to have your hard work evaluated and rewarded. In addition to traditional styles, new this year is the smoothie sour style category, and the collaboration competition. Learn more and register your beers by visiting www.BestofCraftBeerAwards.com/register Hosts:  Don Tse and Em SauterGuests: Scott Janish, Eric AbbottSponsors: The Best of Craft Beer Awards, Estrella Galicia, All About BeerTags: Biotransformation, Hops, IPA, SaisonThe following music was used for this media project:Music: Awesome Call by Kevin MacLeodFree download: https://filmmusic.io/song/3399-awesome-callLicense (CC BY 4.0): https://filmmusic.io/standard-licenseArtist website: https://incompetech.com ★ Support this podcast on Patreon ★