The Miracle Wine & the Diversity of Aya

Yoshitada Katsuki was born and raised in Miyazaki City, the capital of Miyazaki Prefecture on the southern coast of Kyushu — a region of lush forests, volcanic mountains, and a subtropical climate that is among the wettest in Japan. Like many young Japanese of his generation, Katsuki felt the pull of the wider world, and at the age of 25 he left his hometown with little more than a backpack and a curiosity about wine. His destination was Marlborough, New Zealand — the Sauvignon Blanc capital of the Southern Hemisphere, where vast, sun-drenched vineyards produce wines of crystalline purity and international renown. It was here, among the orderly rows of vines and the industrial-scale wineries of Marlborough, that Katsuki received his first formal training in viticulture and winemaking — a foundation in technique and discipline that would serve him throughout his career, even as he would eventually reject much of the industrial philosophy that underpinned it.

But Marlborough was only the beginning. Katsuki's wanderlust and his deepening fascination with wine culture led him to Germany, where he found himself working at a family-run winery — an experience that would prove transformative in ways that Marlborough's corporate scale could never have provided. In Germany, Katsuki discovered a wine culture that was fundamentally different from the export-driven model he had known in New Zealand: families making and selling wine together, closely connected to their local communities, producing small batches for neighbours and regional markets rather than shipping containers to distant continents. The intimacy of this model — the direct relationship between grower, maker, and drinker — struck a chord deep within him. He saw that wine could be not merely a product but a form of community, a way of bringing people together around a shared table, a shared landscape, a shared story. This was the culture he wanted to recreate, not in Germany or New Zealand, but in the humid, mountainous, seemingly impossible landscape of his own hometown.

After more than a decade abroad, Katsuki returned to Miyazaki in 2013 — not to the city where he had grown up, but to Aya Town, a small settlement of extraordinary natural beauty and historical significance, nestled in the mountains roughly 150 metres above sea level. Aya is nationally known as the birthplace of organic farming in Japan — the first town in the country to create an ordinance aimed at promoting organic agriculture, introduced in 1988. The entire town engages in organic agriculture, and its commitment to sustainable coexistence between human community and natural environment led to the area being registered as a UNESCO Biosphere Reserve in 2012. It was here, surrounded by one of Japan's largest remaining lucidophyllous forests, inside a protected ecosystem of extraordinary biodiversity, that Katsuki chose to begin his experiment. He inherited a 0.5-hectare vineyard from his parents and began his attempt at sustainable grape cultivation — inspired, he says, by Akinori Kimura and his "Miracle Apples," the legendary story of a Japanese farmer who proved that apples could be grown without pesticides by creating an ecosystem so balanced that nature itself controlled the pests.

The first years were not easy. The region had been said to be unsuitable for winemaking — the rainfall was too high, the humidity too extreme, the pests too abundant, the diseases too rife. European wine grapes, which Katsuki had initially attempted to grow based on his New Zealand training, struggled against the relentless moisture. Sauvignon Blanc, Chardonnay, Gewürztraminer — varieties that thrive in drier, cooler climates — were devastated by fungal diseases and rot. Business-wise, it was not realistic to continue. But Katsuki is not a man who accepts conventional wisdom when it contradicts his experience. He began to experiment with Japanese varieties — table grapes that had been bred over generations for resistance to humidity and disease — and with European varieties that showed unexpected resilience. He expanded his plantings, hand-selecting and personally importing a diverse lineup of varieties suited to Miyazaki's challenging climate. By the time he opened Katsuki Wines in 2017, he was farming approximately one hectare with around 40 different grape varieties — a polycultural vineyard of extraordinary diversity that would become the signature of his estate and the foundation of his philosophy.

Yoshitada Katsuki's winemaking philosophy is distilled into a single word: diversity. This is not merely a description of his vineyard, with its 40-plus varieties; it is a principle that governs every aspect of his practice, from the selection of grapes to the composition of blends, from the approach to fermentation to the relationship with his community. Katsuki believes that diversity is not only a strength but a necessity — that the complexity and resilience of a diverse ecosystem, whether in a vineyard or in a bottle, far exceeds that of a monoculture. He grows a variety of grape types with different characteristics and blends them together, viewing this as a way to allow for new possibilities in wine and to represent diversity in its deepest sense. This is why his wines are never fixed recipes; each vintage is unique, with blends determined by the year's natural conditions rather than predetermined formulas. The Aya Rouge, for example, has been crafted from up to 15 different varieties in a single vintage — a radical approach that would horrify conventional winemakers trained to pursue varietal purity but that produces wines of extraordinary complexity and balance.

The cellar work at Katsuki Wines is a testament to the philosophy of minimal intervention carried to its logical extreme. Every process — from harvest to crushing, pressing to racking, bottling to labelling — is carried out entirely by hand. There are no pumps, no filters, no machines that separate the winemaker from the material. Before crushing, Katsuki and his team carefully sort the grapes, removing any foreign matter and damaged fruit to ensure the best quality — a labour-intensive process that is only possible on a small scale but that is essential to the purity of the final wine. Fermentation is initiated solely by wild yeasts — the indigenous microorganisms that live on the grape skins and in the air of the vineyard, a population shaped by the unique microbiome of the Aya Biosphere Reserve. These yeasts are not predictable or controllable; they ferment at their own pace, producing wines of vintage-specific character that cannot be replicated. Katsuki does not inoculate with laboratory strains, does not add enzymes to enhance extraction, does not adjust temperature to speed or slow fermentation. He watches, waits, and trusts.

Clarification is achieved through gravity alone — the most ancient and gentle of wine-making techniques. The wine is racked several times before bottling, allowing natural sedimentation to clarify the liquid without the violence of filtration or the chemical intervention of fining agents. Each racking is done by hand, with the wine gently transferred from one vessel to another, leaving the sediment behind. This process is repeated multiple times over months, achieving a clarity that is natural rather than forced, stable rather than sterile. Katsuki generally avoids the use of sulfites and stabilizers entirely — a radical position that is only possible because of the health of his grapes, the cleanliness of his cellar, and the natural stability that comes from patient, attentive winemaking. The result is wines that are profoundly alive — wines that continue to evolve in the bottle, that express vintage variation with transparency, and that carry the microbiome of their origin in every glass.

The pest control method that Katsuki employs is as playful as it is effective — a solution of vinegar, sugar, and local shochu that he applies to the vines, joking that it "lets bugs get drunk before..." The humour is characteristic of a man who takes his work seriously but not himself, who understands that farming is as much about observation and adaptation as it is about technique and theory. The shochu — a distilled spirit native to Kyushu, made from sweet potatoes or rice — is a local product, part of the cultural landscape of Miyazaki, and its use in the vineyard is a reminder that Katsuki's winemaking is deeply embedded in the place where he lives. The vinegar and sugar modify the solution's pH and stickiness, creating a coating on the leaves that deters pests without killing them, without disrupting the ecosystem, without introducing synthetic chemicals into the biosphere. It is a solution that could only have been devised by a farmer who knows his land intimately, who experiments constantly, and who is willing to try the unexpected.

"Aya Rouge" — The Diversity of Fifteen Grapes: The Aya Rouge is Katsuki's flagship red — a wine that embodies his philosophy of diversity in its most radical form. In the 2021 vintage, it was a blend of Merlot, Fujiminori, Regent, and assorted other grape types — up to 15 varieties in total, each contributing its own colour, aroma, tannin, and acid to a composition that is greater than the sum of its parts. In the glass, it shows a deep, luminous ruby-purple — a colour that speaks of ripeness and health rather than extraction and manipulation. The nose is a complex tapestry of red and black fruit — cherry and strawberry from the earlier-ripening varieties, plum and blackberry from the later ones — intertwined with notes of wild herbs, violet, and a distinctive earthy warmth that speaks of the volcanic ash soils and the humid forest air. There is no oak to mask the fruit's intrinsic character; the wine is aged in neutral vessels that preserve its purity and allow the blend's complexity to shine. On the palate, it is medium-bodied and supple, with tannins that are present but fine, providing structure without astringency. The acidity is vibrant and natural, a product of the cool mountain nights and the diversity of varieties that ripen at different rates. The finish is long and savoury, with notes of dried herbs, warm earth, and a hint of the shochu-spiced humour that defines Katsuki's approach. This is a wine that could not be made anywhere else — a wine that requires 40 varieties, 3,000 millimetres of rain, volcanic ash soil, and a UNESCO Biosphere Reserve to achieve its singular character.

"Aya Blanc" — The White of Many Faces: The Aya Blanc is Katsuki's white wine — a blend that, like the Rouge, changes composition with each vintage according to the conditions of the year. The 2022 vintage combined Chardonnay, Aki Queen, and Shine Muscat — three varieties of utterly different character, united by Katsuki's vision of diversity and balance. Chardonnay provides structure and depth, Aki Queen contributes aromatic intensity and floral perfume, and Shine Muscat — a table grape famous throughout Japan for its sweetness and musky fragrance — adds a distinctive, almost tropical note that is unmistakably Japanese. In the glass, the Aya Blanc glows with a pale golden hue, bright and clear despite the absence of filtration. The nose is a kaleidoscope of citrus and stone fruit — lemon zest and green apple, white peach and fresh apricot — with a floral lift of jasmine and acacia, and the distinctive musky, grapey perfume of the Muscat family. On the palate, it is medium-bodied and textured, with a natural richness that comes from the diversity of varieties and the patience of gravity clarification. The acidity is vibrant and refreshing, providing balance and length without the sharp edge of acid adjustment. The finish is mineral and saline, with a hint of volcanic ash and forest mist that speaks of Aya's unique terroir. This is a wine for sashimi, for tempura, for the delicate, precise flavours of Japanese cuisine — a wine that complements rather than competes, that enhances rather than overwhelms.

"Aya Topia" — The Labrusca Revelation: The Aya Topia is perhaps Katsuki's most distinctive and unexpected wine — a white made from three different Labrusca grape varieties, each vinified separately and then blended, harvested from the vineyard next to the winery. Labrusca — the native American grape species that includes Concord, Niagara, and Catawba — is generally dismissed by the international wine community as suitable only for juice, jelly, and communion wine, its distinctive "foxy" aroma considered a flaw in the context of European vinifera standards. Katsuki rejects this prejudice entirely. He sees in Labrusca a variety adapted to humid climates, resistant to disease, and capable of producing wines of extraordinary aromatic intensity and unique character when farmed organically and fermented naturally. The 2023 vintage was a blend of Kyoho, Niagara, and Portland — three varieties that, in Katsuki's hands, produce a wine of pale gold-yellow colour with a slight green tint. The aroma's surface features citrus and light green notes like fresh grass, with quince and pear fruit at its core, and the distinctive, unmistakable Labrusca perfume that Katsuki has learned to harness rather than hide. On the palate, it is light and refreshing, with a crisp acidity and a subtle sweetness that is the natural residue of the grape's high sugar content, not an added ingredient. The finish is clean and appetising, with notes of green apple, white flowers, and a hint of the wild forest that surrounds the vineyard. The Aya Topia is Katsuki's declaration that the categories of "wine grape" and "table grape" are cultural constructs, not natural laws — that any grape, treated with respect and skill, can produce a wine worth drinking, and that the diversity of the vineyard is the strength of the cellar.

To understand Yoshitada Katsuki, one must understand that Katsuki Wines is not merely a winery; it is a community project, an educational initiative, and a model for sustainable agriculture that extends far beyond the one hectare of vines that Katsuki farms. His philosophy of "diversity" is not limited to the grapes in his vineyard; it is a social principle, a way of organising human relationships around the shared labour and shared joy of making wine. Katsuki was inspired to return to Miyazaki after working in Germany and seeing families making and selling wine together, closely connected to the local community. His goal is to share the excitement of winemaking and promote organic agriculture among the next generation — not by lecturing or preaching, but by inviting people to participate, to get their hands dirty, to taste the miracle of transformation that occurs when grape juice becomes wine through the quiet magic of natural fermentation.

This community focus is visible in every aspect of Katsuki's operation. Bar and restaurant owners who agree with his philosophy and passion come to volunteer at harvest time — professionals from Tokyo, Osaka, and beyond who travel to rural Miyazaki not for a wine tourism experience but to participate in the labour of winemaking, to connect with the land and the people who farm it, to understand the true cost and true value of natural wine. These volunteers are not casual visitors; they are collaborators, ambassadors, members of an extended community that Katsuki has built around his project. Among them is Motoki Sugino, Katsuki's assistant, who hopes to go independent in the future — to establish his own winery, to apply the lessons he has learned in Aya to his own vision, to become part of the next generation of Japanese natural winemakers that Katsuki is actively cultivating. This is not a competitive relationship; it is a generational one, a passing of knowledge and passion from one vigneron to the next, in the same way that Katsuki himself learned from the family wineries of Germany and the organic farmers of Aya.

Katsuki's approach to education and community building is deeply rooted in the specific context of Japanese wine culture. He understands that wine in Japan is still largely seen as a luxury product — a souvenir item bought for gifting rather than a daily pleasure enjoyed with meals. "We can't make wine cheap here because of the climate," he acknowledges. "People dream of a wine culture like Germany or France, but it's only possible there because of the conditions. We have to work twice as hard, so the price goes up." This economic reality creates a barrier between consumers and wine, particularly natural wine, that Katsuki is determined to break down. He believes that more education is needed — that Japanese consumers must understand that the wines being produced in their own country are made in a totally different climate from European wines, and that this difference is not a deficiency but a distinctive characteristic that deserves appreciation and respect. "We are making wine in a totally different climate and we have to discuss this and educate the consumer about what it is we're doing."

The unique style of Katsuki's winemaking — different from mass-produced wine in every conceivable way — is the foundation of this educational mission. His wines are not standardised, not consistent from year to year, not designed to meet market expectations. They are expressions of a specific place, a specific season, a specific philosophy — wines that change, evolve, and surprise. This unpredictability is not a flaw; it is a feature, a reminder that wine is an agricultural product, not an industrial one, and that the best wines are those that tell the truth about where and how they were made. Katsuki shares the excitement of this truth with everyone who visits his winery, who volunteers at his harvest, who drinks his wine — and in doing so, he is slowly, patiently, building a community of informed, engaged consumers who understand that the high price of his wines reflects not luxury but labour, not exclusivity but integrity, not marketing but miracle.

In an age of industrial wine production, of homogenised flavours and marketing-driven branding, Katsuki Wines stands as a radical alternative — a tiny estate, farmed by hand, producing wines of extraordinary diversity and authenticity from a region that was said to be impossible. Yoshitada Katsuki is not merely making wine; he is making a statement — about the potential of organic agriculture in the most challenging conditions, about the value of community over commerce, about the importance of educating the next generation, and about the miracle that occurs when a farmer trusts his land, trusts his grapes, and trusts the ancient, invisible processes of nature to transform humble fruit into something that brings people together around a shared table. The miracle wine of Aya is not a one-time event; it is a way of life, a continuous experiment, and a promise that the future of Japanese wine — and perhaps of wine everywhere — lies not in doing more, but in doing less; not in controlling nature, but in collaborating with it; not in monoculture, but in the beautiful, chaotic, resilient, and infinitely surprising power of diversity.