#Japan #Niigata #Tsunan Brewery #Sake Seminar #Ken Nishizaki

Innovation in Sake Production: Tsunan Brewery's Smart Brewing Presentation

On September 18th and 19th, 2025, Tsunan Brewery participated in the prestigious 115th Sake Production Technology Seminar, held at the historical Akarenbika Brewery, also known as the former Brewing Experiment Station's first factory, recognized as an important cultural heritage site. The seminar, sponsored by the Japan Brewing Association, was not just a gathering of industry professionals but a platform to explore the future of sake production through technological advancements.

Presentation by President Ken Nishizaki

Leading the charge was Ken Nishizaki, the president of Tsunan Brewery, who delivered a presentation titled "Smart Brewing: AI and Brewing Microorganism Research". Nishizaki's discussion centered on the integration of generative AI and fermentation research to establish a distinctive terroir-based sake brand from Tsunan. The focus was on how these technologies could optimize fermentation conditions through data collection and analysis.

Highlights of Smart Brewing Techniques

Nishizaki showcased several cutting-edge practices within the realm of smart brewing, including:
1. AI-Driven Temperature and Fermentation Rate Simulation: By utilizing AI, the brewery can predict and optimize the conditions necessary for producing high-quality sake.
2. Circular Economy Practices: The brewery emphasizes sustainability through the reuse of sake lees and the utilization of local resources, promoting a more eco-friendly approach.
3. Exploration of Fermentation in Space: Looking ahead, Tsunan Brewery is even researching the potential for sake production in outer space, displaying a forward-thinking attitude that merges tradition with modern innovation.

Tasting of Go GRANDCLASS Uonuma Koshihikari Edition

During the first day’s networking session, participants were treated to a tasting of Tsunan Brewery's premium sake, Go GRANDCLASS Uonuma Koshihikari Edition. This sake is crafted with:

• - 100% Uonuma-grown Koshihikari rice
• - Limited production during heavy snowfall periods
• - Long-term low-temperature fermentation for an exquisite finish

The tasting garnered high praise, highlighting the sake's enchanting fragrance and rich umami flavor. Its quality has not gone unrecognized, as it has received numerous awards in both domestic and international competitions and is part of the brewery's efforts to expand its presence globally.

Ken Nishizaki’s Vision for the Future

In his remarks, President Nishizaki expressed a commitment to developing new sake manufacturing techniques while improving the quality of sake and promoting sustainable brewing practices. He stated, “By fusing the natural conditions of Tsunan, a heavy snowfall area, with cutting-edge generative AI technologies, we aim to pave the way for the future of sake production while deepening our collaborations with local resources and accelerating our expansion both domestically and internationally.”

Insights on the 115th Sake Production Technology Seminar

The seminar served as a vital linkage for brewers to discuss innovative sake production methods. Held at the Akarenbika Brewery, it focused on themes like "Utilizing Data in Sake Brewing" and "Diverse Sake Brewing in the Reiwa Era," which encouraged rich exchanges among attendees.

Akarenbika Brewery: A Historical Treasure

The Akarenbika Brewery, established in May 1904 as part of the Ministry of Finance's brewing experiment efforts, is a testament to Japan's brewing technology evolution. Designed by renowned Meiji-era architect Yori Nakagawa, this building is noted for its unique brick construction modeled after German breweries. It plays a crucial role in Japan's modernization of sake brewing and its economic development. The brewery has been recognized as an important cultural asset since December 2014, reflecting its legacy in the brewing industry.

About Tsunan Brewery

Founded in Tsunan Town, Niigata Prefecture, Tsunan Brewery operates in one of Japan's renowned heavy snowfall regions. Utilizing natural spring water sourced from 2,000-meter mountains and local rice varieties like Go Hyakumangoku and Uonuma Koshihikari, the brewery blends tradition with innovation in sake production. In 2025, it garnered the Niigata Prefectural Governor's Award (1st place) at the "Echigo-style Sake Brewing Technique Championship", further solidifying its reputation for excellence in the sake industry.

To learn more, visit Tsunan Brewery's official website.