Mars Tsunuki

Type: Distillery

Mars Tsunuki is Hombo Shuzo's whisky distillery in Minamisatsuma City, Kagoshima Prefecture, where distilling began in November 2016 on the company's founding ground. Its warm, low-altitude setting was deliberately chosen to contrast with Hombo's mountain distillery in Nagano, while its spirit is described by Nomunication as heavier and thicker than the lighter Shinshu malts. [1][2][4][6]

At a glance

What Mars Tsunuki is known for

Tsunuki brings together two parts of Hombo's history: its roots in Kagoshima and its deliberate use of contrasting places to make and mature whisky. Nomunication's undated account describes it as the company's second active whisky distillery and its fourth in company history. The supplied record does not independently establish the current count. [1]

The distinction from Nagano is central to understanding the site. Rather than reproducing the mountain setting of its other malt distillery, Hombo chose a warm location at low altitude. Japan Whisky Press describes Nagano, Tsunuki and the separate Yakushima maturation cellar as three deliberately different climates within the Mars operation. [6]

Nomunication characterises Tsunuki's house style as heavy and thick, compared with lighter Shinshu malts. That is an attributed description of the distillery's character, not a tasting assessment of every release. It gives readers a useful starting point without substituting for the identity and maturation history of an individual bottle. [1]

A return to Hombo's founding ground

Hombo Shuzo's history at Tsunuki reaches back well before the present whisky operation. The company was founded in 1872 and had moved into shochu by 1909; its own corporate history records incorporation with its headquarters in Tsunuki, Kaseda City, and the acquisition of a whisky licence in 1949. [4][5]

Nor was the start of distilling at Tsunuki in 2016 Hombo's first whisky production in Kagoshima. Nomunication records whisky distillation at the company's Kagoshima factory from 1981 to 1985. Tsunuki therefore represents a return to whisky making in the prefecture, rather than the beginning of that connection. [1] The length of the gap is Disputed: Whisky Clan gives 32 years, while Nomunication's dates from 1985 to 2016 give 31. [1][3]

The surviving buildings make the longer history tangible. A seven-storey iron tower, built in 1956, still contains a defunct Arospass continuous still. The Houjou residence dates from 1933 and was once the home of the company's second-generation president; it now serves as the visitor centre and bar. [1][3]

Production and site timeline

Story box: rebuilding before the whisky return

Founding story: Hombo Shuzo was founded in 1872, and the present Tsunuki distillery occupies its founding ground. The whisky operation began distilling in November 2016. Sources and claim mapping: company founding and location; first distillation.

Turning point: The site was bombed in 1945, and a new distillery building stood by 1947. Source and claim mapping: wartime damage and rebuilding.

Verdict: Documented

Claim: Tsunuki was rebuilt within two years of the 1945 air raids.

What the record shows: The verified sheet records the bombing in 1945 and a replacement distillery building by 1947, citing Nomunication.

Evidence against or gap: None found in the supplied record.

Earliest known source: Not reliably established. Nomunication's profile is undated.

Last checked: November 2026; exact day not recorded.

Production equipment and warehouses

Nomunication's published equipment inventory describes a stainless steel mash tun and five stainless steel washbacks, followed by separate Miyake wash and spirit stills. Both principal pot stills use indirect heating and have descending lyne arms. The figures below describe that documented inventory, not a newly inspected equipment survey. [1]

These vessel volumes should not be read as an annual production figure. They describe individual pieces of equipment, rather than the quantity of whisky produced during a year.

Malt whisky is not the whole production story. Nomunication's inventory describes grain whisky distillation for two months of the year and a Holstein hybrid still used for grain whisky and gin. The supplied record does not establish whether the equipment or schedule has since changed. [1]

The defunct Arospass still in the iron tower belongs to a different part of the site's history. Keeping it separate from the documented whisky equipment avoids confusing a surviving industrial feature with a still reported as being used for current production. [1]

Three locations, three deliberately different climates

Tsunuki's relationship with the other Mars locations matters as much as its equipment. The warm Kagoshima site was chosen to contrast with Nagano's mountain setting, while Yakushima supplies a third maturation environment. Japan Whisky Press describes this arrangement as a deliberate way of working with different climates for blending. [6]

Yakushima is an ageing cellar, not another distillery. It opened in 2016 and has no stills, according to the supplied record. Its place in the Mars story is therefore maturation, a distinction worth keeping clear when reading names associated with the company's whisky. [4]

The companion profile of Mars Komagatake provides the most useful next step for understanding the other distillery in this arrangement. Here, the central point is that the place of distillation and the place of maturation need not be the same, even within one producer's operations.

Reading Tsunuki release names

The clearest example is Komagatake Tsunuki Aging. Despite Tsunuki appearing in the name, the whisky was distilled at Komagatake in 2013 and only matured at Tsunuki. It should not be treated as spirit distilled at Tsunuki. [2][3]

Single Malt Tsunuki The First followed in April 2020, with a recorded release of 9,984 bottles at 59% ABV. Single Malt Tsunuki Peated followed in early 2021, with 14,830 bottles at 50% ABV. These are historical release details, not a statement about present availability or the current range. [1]

Whisky Clan reports that the distillery releases limited single malts each year. That makes the year and full expression name useful details to retain when identifying a bottle, rather than treating every release simply as “Tsunuki”. [3]

Three distinctions resolve the main misunderstandings around the distillery. Whisky matured at Tsunuki is not necessarily distilled there; Hombo's Kagoshima whisky production predates the present operation; and the 2016 opening took place on an established company site, not previously unused ground. Each distinction helps place the whisky within the right production history. [1][2][4]

Visiting the historic site

Visits are by reservation, according to the supplied visitor accounts. Check the producer's current arrangements before travelling, including booking requirements, accessibility and any age conditions for tours or bar access; this profile does not establish those details. [1][3]

The Houjou residence is a particularly useful part of the visit story because it connects the whisky operation with the company's earlier life at Tsunuki. The former family home is now the visitor centre, bar and shop, rather than simply a preserved building separate from the distillery's public use. [1][3]

Read the site in those two layers: a whisky distillery that began production in 2016, and a much older Hombo property whose buildings record earlier chapters. That combination, together with the deliberately contrasting climate, is what distinguishes Tsunuki within the Mars operation. [1][4][6]

Where to go next

• Mars Komagatake: read the companion profile for the other Mars whisky distillery.
• Kanosuke: continue with another Japanese distillery profile.
• Yoichi: explore a further distillery in the Japanese collection.

Sources

1. Nomunication. Mars Tsunuki Distillery. Undated profile, checked November 2026. https://www.nomunication.jp/distillery/tsunuki/
2. Japan Whisky Press. Tsunuki distillery: Mars whisky's return to its birthplace. Undated guide, checked November 2026. https://japanwhiskypress.com/tsunuki-distillery-guide/
3. Whisky Clan. Mars Tsunuki Distillery: History, Whisky Range and Visitor Guide. 2026 guide, checked November 2026. https://www.whisky-clan.com/post/mars-tsunuki-japanese-whisky-kagoshima-history-2026-range-visitor-guide
4. Japanese-distillery.com. Mars Tsunuki Distillery Guide. Undated guide, checked November 2026. https://japanese-distillery.com/distilleries/tsunuki
5. Hombo Shuzo. History, Company. Producer's account, undated, checked November 2026. https://www.hombo.co.jp/en/company/history/
6. Japan Whisky Press. Mars Shinshu distillery guide. Undated guide, checked November 2026. https://japanwhiskypress.com/mars-shinshu-distillery-guide/

Prepared as desk research from verified fact sheet TOP-A334 and its listed references, without a site visit or an original tasting.

Last checked: November 2026