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Cold lager fermentations below 10°C (50°F) do not consistently respond to increased pitch rates as conventional brewing wisdom suggests, with strain selection proving more impactful than cell count. Richard Preiss’s bench-scale study reveals that fermentation speed, ester production, and sulfur expression vary significantly by strain, challenging assumptions about pitch rate optimization in traditional lager brewing.
Graham Stewart, a legendary brewing scientist and prolific author, reflects on the history and science of yeast propagation in commercial brewing, tracing its origins to Carlsberg in 1883 and emphasizing the critical importance of managing yeast health, stress factors, and propagation methods to maintain fermentation performance and beer quality.
Healthy yeast is the foundation of consistent, high-quality beer production, and the new book Brewing Yeast Volume 1: Yeast Fundamentals and Propagation by Bill Macca and Florian Kuplent fills a critical gap in brewing literature by offering a practical, science-based guide tailored to working brewers. The authors emphasize that while theoretical knowledge is important, real-world application—especially in yeast propagation, vitality testing, and contamination control—is where most breweries fail, often with costly consequences.
The mash filter is a highly efficient, gravity-independent brewing technology that enables faster lautering, higher extract efficiency, and superior wort clarity compared to traditional lauter tuns, especially when paired with fine milling and modern hybrid plate designs like the Mira 2001.
Implementing a consistent sensory program is the most effective first step any brewery can take to improve lager quality, enabling early detection of off-flavors and deeper understanding of process impacts.
Drake's Brewing Company significantly reduced water, CO2, and waste through low-cost, high-impact sustainability initiatives like flow metering, sidestreaming process waste to farmers, and reusing materials like plastic pallets and rubber bands.
Ryan Fields, co-owner of Wildfields Brewhouse, emphasizes that brewing award-winning dark malty beers isn’t about reinventing the wheel but mastering fundamentals like water chemistry, mash temperature, and ingredient selection while prioritizing drinkability and flavor over strict tradition.
Dr. John Henning, USDA research geneticist, discusses the public hop breeding program’s advancements in genetics, disease resistance, and flavor profiling, culminating in the release of the highly anticipated tropical aroma hop variety 074, which promises broad adaptability and robust sensory characteristics.
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Each week, thousands of brewers download The Master Brewers Podcast to hear interviews with the industry's best & brightest in brewing science, technology, and operations. The show is known for featuring technical deep dives, a bit of brewing history, cutting edge research, hard lessons learned, important industry contributors, and no fluff. If you make beer for a living, this show is for you.Thank you, sponsors! <a href="http://www.proximitymalt.com/?utm_source=Fireside&utm_medium=Homepage&utm
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