Mantensei Star-Filled Sky: A Tottori Junmai Ginjo Matured Three Years in Tank

Mantensei means star-filled sky. Tottori is the least populated prefecture in Japan, which is exactly the kind of place where you can still see one.

The Brewery

Mantensei is the premium label of the Suwa brewery in Tottori, on the Sea of Japan coast.

Two things make it unusual.

First, it is one of the few breweries that produces only junmai grades: junmai, junmai ginjo and junmai daiginjo. No distilled alcohol is added to anything they make. Most breweries produce at least some alcohol-added sake, because it is cheaper and because a small addition genuinely does lift aroma. Ruling it out entirely across the whole portfolio is a commitment rather than a marketing line.

Second, the company president, Masahiko Touda, is also the toji, the master brewer. That combination has become rare. In most breweries the two roles are separate, and historically the toji was a seasonal contractor who arrived for the brewing season and left afterward. A president who is also making the sake has no gap between the business decisions and the brewing decisions.

Three Years in Tank

Star-Filled Sky is a junmai ginjo, and the notable part is what happens after fermentation: it is matured in tank for three years before release.

Most sake is designed to be drunk young. Freshness is the usual selling point, and much of the industry pushes bottles out within months of pressing.

Extended maturation is a different bet. Time in tank softens sharp edges, lets the acidity integrate, and lets savory umami come forward as the sharper aromatic notes recede. It also ties up tank space and capital for three years, which is why relatively few breweries do it.

The trade is aroma for depth. You lose some of the bright fruit a fresh ginjo carries. You gain structure and savory richness.

What It Tastes Like

Bold and fragrant, with intense aromas and a savory richness underneath. Elegant pear and floral notes, a clean and refreshing finish, and more weight in the middle than a young junmai ginjo would have.

The word people keep reaching for with this bottle is depth, and that comes from the three years.

How to Drink It

Chilled, in a wine glass or a guinomi.

This is also one of the sakes worth trying slightly warmed, gently, not hot. The savory character that the maturation built responds well to a little heat, which is not true of most ginjo.

Pair It With

Sashimi platters and grilled white fish, but also richer food than a typical ginjo can handle. The three years give it enough body to sit next to something with real flavor.

Try It at Juraku

Mantensei Star-Filled Sky is on the sake list at Izakaya Juraku, Lower East Side. Check the current menu or ask us what is open.