The News
Bardstown Bourbon Company announced the release of Distillery Reserve Mars Single Malt Japanese Blend on May 26, 2026. The product was developed in collaboration with Japan’s Mars distilleries and involves a co-aging process where Japanese single malt whisky from Komagatake and Tsunuki distilleries was aged together with bourbon in barrels for 12 months. The release is available starting May 29, 2026, in extremely limited quantities.
Bardstown’s newest limited‑release whiskey arrives amid a sharp rise in Japanese whisky exports and a slump in U.S. bourbon sales, underscoring how niche blends can still command attention.
Japanese whisky exports hit 277 million liters in 2025—up 19% from 2023—while U.S. bourbon volume fell 1.8% last year, marking three straight years of contraction for the category.
Product: Bardstown Bourbon Co. has unveiled Distillery Reserve Mars Single Malt Japanese Blend, a co‑aged whiskey that marries Kentucky bourbon with Japanese single malt from Mars Komagatake and Tsunuki distilleries. The blend is aged together in the same barrel for 12 months, rather than finished separately, creating a unique flavor profile that blends caramelized plum, roasted malt, vanilla, baked cherry, and toasted oak notes.
- Availability: Exclusively at Bardstown’s distillery gift shop and Louisville tasting room, starting May 29, 2026.
- Size & price: 375 mL bottle at $99.99 (equivalent to a 750 mL bottle at $199.98).
- Proof: 109.8 % (54.9 % alc‑by‑vol).
Why it matters for operators: The release is a distillery‑exclusive offering, so bars and distributors should not stock the limited SKU in regular inventory. Instead, they can feature the blend in tasting events or as a halo item to drive foot traffic into Bardstown’s on‑site experience. Bardstown’s core bourbon line remains available off‑premise; monitoring collector demand for that line could reveal opportunities to introduce other high‑margin expressions at similar price points.
Contextual backdrop: Bardstown’s Distillery Reserve platform has already seen experimental releases sell out within 72 hours of launch, and the company operates a contract distillation capacity exceeding 12 million proof gallons annually. The Japanese whisky market’s record export volume in 2025—277 million liters—highlights growing international appetite for premium whiskies, positioning Bardstown’s co‑aged blend at the intersection of U.S. bourbon innovation and global Japanese whisky demand.
Original Press Release
Bardstown, Ky. (May 26, 2026) — Instead of leaving annual volume loss to the angels, Bardstown Bourbon Company has found a way to fill the empty space in its latest Distillery Reserve. Distillery Reserve Mars Single Malt Japanese Blend, a pioneering release that bridges Kentucky bourbon and Japanese whisky traditions in an entirely new way, is available in extremely limited quantities beginning May 29, 2026.
Developed in collaboration with Japan’s Mars distilleries, this limited release represents a first-of-its-kind co-aging process, uniting two distinct whisky cultures within a single barrel.
Japanese single malt whisky from Mars Komagatake and Tsunuki distilleries was shipped to Bardstown, Kentucky, where it was introduced into barrels containing mature bourbon. Rather than a traditional finishing approach, the Japanese whisky and Kentucky bourbon were aged together in-barrel, allowing the spirits to fully integrate and evolve, emerging 12 months later as one. The final year of aging allowed the products to develop and find balance together. It also added additional wood sugar and barrel character after a warm Kentucky summer.
The Japanese components—both crafted from 100% malted barley—bring distinctive character shaped by their original maturation. Komagatake single malt, aged in Umeshu (plum liqueur) barrels, contributes rich fruit and floral complexity, while Tsunuki single malt, aged in rare Sakura (cherry wood) barrels, imparts delicate spice and subtle wood influence. Aged together with a foundation of Kentucky bourbons aged 10 and 16 years, the end result is a layered and globally inspired whiskey unlike anything else.
“This project is about more than blending—it’s about true integration,” said Dan Callaway, Master Blender, Bardstown Bourbon Company. “By aging Japanese single malt whiskies together with Kentucky bourbon in the same barrel, we’ve created something entirely new. The result is a seamless conversation between two traditions, where neither overpowers the other, and both are elevated.”
“We are hopeful that this collaboration will open up new possibilities in the art of whiskey-making,” said Mr. Kazuto Hombo, President of Hombo Shuzo Co., makers of Mars Whisky. “By fusing the techniques and philosophies each company has cultivated, and by utilizing carefully selected base whisky, aging environments, and delicate blending techniques, we aim to create a new whiskey experience that combines depth and elegance.”
The resulting whiskey is both complex and refined. Caramelized plums over roasted malt and vanilla bean lead to a rich, evolving palate of baked cherry and toasted oak. An exquisite, delicate finish encapsulates the best qualities of both bourbon and Japanese single malt whisky.
Distillery Reserve Mars Single Malt Japanese Blend is presented at 109.8 proof (54.9% alc. by vol.) and offered for $99.99 in the Distillery Reserve’s signature 375mL format. The Distillery Reserve is available exclusively at Bardstown Bourbon Company’s distillery gift shop and its Tasting Room in Louisville.
Launched in 2025, the Distillery Reserve is a platform for small-scale innovation, offering one-time-only releases that challenge the boundaries of whiskey through experimental finishes, extended aging, and uncommon blending. Prior releases including Cathedral French Oak, Hokkaido Mizunara Oak, Normandie Calvados Brandy Barrel, and Cascadia Garryana Oak have been praised by critics and consumers alike as stand-out whiskeys that reinforce Bardstown’s reputation for bold innovation.
A second innovation blending Japanese and American whisk(e)y traditions is currently underway at Mars’ Tsunuki Distillery, in the southern region of Japan. The Mars blend also combines Bardstown Bourbon whiskey with their own aging stock.
Mr. Hombo added, “Through this initiative, we intend to deliver unprecedented taste to our customers by respecting tradition while embracing innovation. While it will take a little more time, we are eagerly anticipating the results of this unique endeavor.”
Sources consulted (web research):
- Bardstown Bourbon Distillery Reserve Mars Japanese Whisky Blend 375ml
- Bardstown X Mars Co Aged Japanese Blend Debuts
- This 100 Whiskey Combines Kentucky Bourbon And Japanese Whisky In A W…
Source: BevNET