Buzz
Beer is primarily composed of four key ingredients: hops, barley, water, and yeast. While hops contribute the distinctive flavor associated with beer, yeast is essential for fermentation, transforming sugars into alcohol. Among the over 1600 yeast strains, only a handful are capable of this process. Typically sourced from decaying fruits, insects, or animals, yeast used by Rogue Brewery in Newport, Oregon, has an unusual origin—the beard of their head brewer.
The team at Rogue Brewery was on a quest to find a unique yeast strain to complement their locally grown barley and hops. They tested three samples from their hop yard, but none successfully fermented.
In a lighthearted moment, someone suggested that brew master John Maier’s 34-year-old beard might harbor the perfect yeast. Maier agreed to the experiment, and nine beard hairs were sent to White Labs for analysis and culturing (a process that prepares the hairs to grow yeast). Surprisingly, Maier’s beard produced a high-quality yeast strain, proving to be an excellent source for fermentation.
The yeast from Maier’s beard is a unique combination of Rogue’s reliable Pacman yeast and a wild brewer’s yeast. While wild yeasts often behave erratically, fermenting only a portion of the alcohol, the beard yeast defied expectations by producing a clean, refreshing flavor uncommon in such strains. The outcome was so surprising that White Labs scientists verified their findings, concerned they might have mistakenly analyzed the Pacman yeast instead.
This discovery led to questions about why Maier’s beard harbored such a distinctive yeast mix. Yeast, being immobile, relies on external carriers for transportation. In a brewery environment, fungi thrive uncontrollably, and unbeknownst to Maier, his beard became a living incubator for Rogue’s Pacman yeast. The wild yeast likely originated from consuming something fruity, resulting in this exceptional blend. Rogue Brewery highlights that Maier’s beard has been present for over 15,000 brews, making it an ideal environment for this rare yeast.
Upon discovering that his beard housed a one-of-a-kind yeast blend, Maier, who has vowed never to shave, remarked, “It was right under my nose all along, and it took two and a half centuries to cultivate.”
