The Captivating History of Sakura-Masamune.

Few sake breweries are as iconic as Nada’s Sakura-Masamune. This is for good reason. Since their establishment in 1625, they have consistently been in the spotlight. Their extensive list of accolades includes discovering Nada’s legendary brewing water (miyamizu), pioneering water-powered rice polishing techniques that revolutionized the industry, serving as the origin for Association Yeast No. 1, and creating the now-ubiquitous "Masamune" brand name.  

Here is a closer look at these landmark accomplishments:  

Miyamizu

During the late Edo period (1603–1868), Nada brewers were thriving, and their sake was in high demand among discerning consumers in Edo (modern-day Tokyo). Fifth-generation owner Yamamura Tazaemon operated breweries in both Nishinomiya and Uozaki—two of the five districts that make up Japan’s famous Nada Go-Go (Five Villages of Nada).  

However, the sake produced at the Ume no Ki ("Plum Tree") brewery in Nishinomiya was consistently superior in quality to the sake made in Uozaki. Determined to find out why, Yamamura experimented with everything: switching the rice batches, rotating brewing equipment, and swapping master brewers between the two locations. Only after exhausting every variable did he realize the secret: it was the water.  

This revelation sparked a lucrative local enterprise supplying this miraculous water to nearby breweries. Originally marketed as Nishinomiya no mizu ("Water of Nishinomiya"), it was later rebranded as miyamizu. Its stellar reputation quickly spread across Japan, elevating the status of Nada brewers nationwide.  

Thanks to its high mineral content, which energizes sake yeast, and its low iron content, which prevents spoilage, miyamizu is ideal for producing Nada's signature rich, full-bodied sake style. Even today, most regional brewers draw water from this exact location in Nishinomiya. While miyamizu is now a symbol of the entire region, the discovery belongs to Sakura-Masamune. 

Suisha (Water-Powered Rice Mills)

Rice polishing is critical to sake production, and Sakura-Masamune played a pivotal role in its technological evolution. Historically, rice was a luxury commodity, and early sake was made using lightly polished grains processed with simple hand or foot pedals. Advanced polishing techniques emerged in the 17th century alongside increased rice availability.

Nada brewers recognized early on that higher polishing ratios produced cleaner, higher-quality sake. The major breakthrough occurred around 1770, when Sakura-Masamune adopted waterwheels (suisha) to power their milling equipment.

Situated below Mount Rokko, Nada benefited from fast-flowing mountain streams. Harnessing this hydraulic power allowed brewers to polish massive quantities of rice to unprecedented levels with significantly less time and manual labor. While electrical milling eventually superseded waterwheels, adopting suisha was an epoch-making leap that gave Nada brewers a decisive competitive edge.

Masamune

The brand name "Masamune" is synonymous with sake today, used by many leading producers across Japan. However, Sakura-Masamune was the first to adopt it—a decision tied directly to the discovery of miyamizu.

Originally, the flagship brand of Yamamura Shuzo (now Sakura-Masamune) was named Shinsui. Following the discovery of miyamizu, the 6th-generation Yamamura Tazaemon sought a name better suited to their upgraded brew. Inspired by a Rinzai Zen Buddhist scroll containing the characters for "righteous" (正) and "sect" (宗), he realized they could be read in Sino-Japanese as seishu—the legal term for refined clear sake.

However, these kanji characters could also be read in native Japanese as Masa-mune. Consumers overwhelmingly favored the latter.

The brand was an enormous success, prompting competing breweries nationwide to copy the name. When trademark laws were tightened during Japan's rapid modernization in the early 20th century, Yamamura Shuzo attempted to register "Masamune" for exclusive use. Patent officials rejected the claim, ruling that the term had become too generic through widespread industry use. To distinguish their original product from the imitators, the brewery added the prefix Sakura ("Cherry Blossom").

Today, Sakura-Masamune remains firmly rooted in Uozaki, drawing water from the same miyamizu wells discovered centuries ago. Their rich history, pioneering innovations, and iconic name continue to make them one of Nada’s most celebrated representatives

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