The American Homebrewers Association (AHA) has officially released the September/October 2025 issue of Zymurgy magazine, a publication that has served as the primary technical resource for the homebrewing community since its inception in 1978. This latest installment focuses on the increasingly blurred lines between amateur enthusiasts and professional brewers, providing a comprehensive look at how the transition from home kitchen to commercial brewhouse has shaped the modern craft beer landscape. Featuring 18 new recipes and a deep dive into historical and contemporary brewing techniques, the issue serves as both a practical manual and a historical record of the hobby’s evolution.

The Evolution of Gary Glass: From AHA Leadership to GABF Medals

A central feature of the September/October 2025 issue is a profile of Gary Glass, authored by Gabe Toth. Glass is a figure of significant importance in the American brewing community, having served for two decades as the director of the American Homebrewers Association. Under his leadership, the AHA saw substantial growth in membership and the professionalization of its flagship events, including the National Homebrew Competition and Homebrew Con.

The article chronicles Glass’s transition from a high-level administrator and advocate for homebrewing rights to a successful competitor on the professional stage. Following his tenure at the AHA, Glass applied his extensive knowledge of fermentation science and sensory analysis to professional production. This dedication culminated in winning medals at the Great American Beer Festival (GABF), an event organized by the Brewers Association that represents the pinnacle of commercial brewing achievement in the United States.

Glass’s trajectory serves as a case study for the "Pro-Am" movement, where the boundary between home and professional brewing is bridged by rigorous technical standards and a shared passion for quality. His success at the GABF highlights the validity of homebrewing as a training ground for commercial excellence, a theme that resonates throughout this issue of Zymurgy.

Regional Collaboration: The Bay Area Mashers and Maltose Falcons

The issue provides an in-depth look at the collaborative efforts of two of California’s most influential homebrew clubs: the Bay Area Mashers and the Maltose Falcons. The Maltose Falcons, founded in 1974, hold the distinction of being the oldest homebrewing society in the United States. Their historical influence on the California craft beer scene cannot be overstated, having fostered the talents of many individuals who would go on to lead the "West Coast" style revolution.

The feature explores a significant collaboration involving these clubs, regional maltsters, and commercial breweries. This partnership underscores the symbiotic relationship that exists within the brewing ecosystem. By working directly with maltsters, homebrewers gain access to specialized ingredients and provide valuable feedback on new grain varieties. For the breweries involved, these collaborations offer a platform for experimental small-batch production that may eventually influence flagship offerings. The article details how these interactions spark innovation, ensuring that the California brewing scene remains a global leader in both technique and variety.

Technical Spotlights: Bönnsch Naturtrüb and the Belgian Witbier

Technical education remains a cornerstone of Zymurgy, and the September/October 2025 issue includes detailed explorations of specific European styles. Homebrewer and professional brewer Gunnar Martens contributes a feature on Bönnsch naturtrüb.

Bönnsch is a regional specialty from Bonn, Germany, often described as a hazy, unfiltered version of the more famous Kölsch from Cologne. Martens provides a technical breakdown of the style, which is traditionally served in a custom, bulbous glass. The "naturtrüb" (naturally cloudy) aspect of the beer requires specific yeast management and a departure from the crystal-clear clarity required of standard Kölsch. Martens’ insights offer brewers a guide to achieving the delicate balance of light malt sweetness and subtle hop bitterness that defines this rare style.

In another technical feature, Charlie Gottenkieny and Jason Perkins share their expertise on the Belgian Witbier. Jason Perkins, the brewmaster at Allagash Brewing Company, is widely regarded as an authority on the style; Allagash White is frequently cited as the benchmark for American-made Witbiers. The article explores the nuances of using unmalted wheat, coriander, and bitter orange peel to create a complex, refreshing ale. Gottenkieny and Perkins discuss the importance of water chemistry and fermentation temperature control in producing a world-class Witbier, providing homebrewers with the tools to replicate professional-level results in a five-gallon format.

The Art and Psychology of Beer Naming

Beyond the technical aspects of brewing, the issue addresses the cultural and competitive elements of the hobby. Ron Minkoff contributes a guide to naming competition-ready beers. In the high-stakes environment of the National Homebrew Competition or GABF Pro-Am entries, a name can serve as a vital component of a beer’s identity and branding.

Minkoff’s approach is described as witty and irreverent, yet it touches on a serious aspect of the industry: intellectual property and marketing. As homebrewers increasingly move into the professional sphere, the ability to create a memorable and legally viable brand name becomes as important as the recipe itself. The guide provides strategies for navigating the crowded landscape of beer nomenclature, ensuring that a brewer’s creation stands out to judges and consumers alike.

Supporting Data: The Impact of Homebrewing on the Economy

The release of this issue comes at a time when the relationship between homebrewing and the broader economy is under close observation. According to data from the Brewers Association, the craft brewing industry contributed approximately $72 billion to the U.S. economy in recent years. Historically, more than 90% of professional craft brewers began their careers as homebrewers.

The 18 recipes included in this issue are more than just instructions; they represent the research and development arm of the craft beer industry. Homebrewers often experiment with ingredients and techniques—such as extreme hopping rates, ancient grains, or novel fruit additions—long before they are adopted by commercial breweries. This grassroots innovation is a primary driver of the diversity found on taproom menus across the country.

Chronology of Zymurgy and the American Homebrewers Association

To understand the context of the September/October 2025 issue, it is necessary to look at the timeline of the AHA:

• 1978: Charlie Papazian founds the American Homebrewers Association in Boulder, Colorado, and publishes the first issue of Zymurgy.
• 1979: President Jimmy Carter signs H.R. 1337, which legalizes homebrewing at the federal level for the first time since Prohibition.
• 2005: The AHA and the Association of Brewers merge to form the Brewers Association, creating a unified voice for both amateur and professional craft brewers.
• 2013: Alabama and Mississippi become the final two states to legalize homebrewing, making the hobby legal in all 50 states.
• 2020s: The "Pro-Am" movement gains significant momentum, with GABF adding dedicated categories for collaborations between homebrewers and professionals.

The current Editor-in-Chief, Dave Carpenter, who has led the magazine through the post-pandemic era, continues this legacy. Carpenter, who began brewing in 2009, has focused on maintaining the magazine’s technical rigor while expanding its reach to a new generation of brewers who utilize digital platforms and advanced home equipment.

Implications for the Future of Brewing

The September/October 2025 issue of Zymurgy reinforces the idea that the "amateur" label in brewing is increasingly a misnomer regarding skill level. As homebrewing equipment becomes more sophisticated—incorporating digital temperature controls, conical fermenters, and automated mashing systems—the gap in quality between home-produced beer and commercial beer continues to narrow.

The inclusion of high-level professional insights from figures like Jason Perkins alongside the grassroots efforts of the Bay Area Mashers suggests a future where the brewing industry is more integrated than ever. This integration ensures a steady pipeline of talent and ideas flowing into the professional sector, while professional standards of sanitation and quality control continue to elevate the homebrewing hobby.

For members of the AHA, this issue represents a continuation of the organization’s mission to promote the community of homebrewers and protect the right to brew. The 18 recipes provided serve as a practical toolkit for brewers looking to challenge themselves with complex styles like Bönnsch and Witbier, while the profiles of leaders like Gary Glass provide a roadmap for those looking to take their passion to the professional level.

Editorial Leadership and Vision

Dave Carpenter’s editorial direction for this issue emphasizes the gerunds of brewing: hiking, traveling, and exploring the cultural roots of beer. By connecting the act of brewing to broader lifestyle and historical contexts, Zymurgy remains relevant in a changing media landscape. The magazine continues to offer a "Free Zymurgy Online Preview" to attract new enthusiasts, while maintaining a paywall for member-only content to support the AHA’s advocacy and educational initiatives.

As the craft beer industry faces new challenges, including changing consumer preferences and supply chain fluctuations, the September/October 2025 issue of Zymurgy serves as a reminder that the heart of the industry remains the individual brewer. Whether brewing in a garage in the Bay Area or on a 30-barrel system in a regional brewery, the principles of fermentation, creativity, and community documented in this issue remain the foundation of the craft.