The Military Man & the Amphora Alchemist
Grape Republic is a zero-sulfur natural winery in Nanyo City, Yamagata — founded by Kazuomi Fujimaki, a former military man who owned six Italian restaurants across Tokyo, Yokohama, and Osaka before committing himself to winemaking. Amphorae from Spain, collaboration with Alex Craighead of New Zealand's Don/Kindeli, and a single uncompromising philosophy: Made of 100% Grapes.
The Military Discipline & the Six Restaurants
The story of Grape Republic begins not in a vineyard but in a military barracks — or rather, in the disciplined, hierarchical, regimented world of the Japanese armed forces, where Kazuomi Fujimaki spent his early career. The military teaches order, precision, and the chain of command; it instils a respect for protocol, a tolerance for discomfort, and a capacity for long-term planning that would prove unexpectedly essential when Fujimaki later turned his attention to wine. But it also teaches something less obvious: the ability to see systems as systems, to understand that complex operations depend on the coordination of many moving parts, and that success requires both vision and the relentless execution of detail. These were not the skills of a romantic vigneron, dreaming of terroir and tradition; they were the skills of an organiser, a manager, a strategist — and they would shape Grape Republic in ways that distinguish it from almost every other natural winery in Japan.
After leaving the military, Fujimaki entered the restaurant business — not as a chef or a sommelier, but as an owner and operator. He built a portfolio of six Italian restaurants across Tokyo, Yokohama, and Osaka: six separate kitchens, six separate dining rooms, six separate teams of staff to manage, train, and inspire. The restaurants were not luxury destinations or Michelin-starred temples of gastronomy; they were neighbourhood Italian eateries, the kind of places where families gather for Sunday lunch, where office workers celebrate birthdays, where couples share pizza and Chianti on first dates. Wine was part of the offering, of course — Italian wines, mostly, the familiar names and reliable labels that pair naturally with tomato-based pasta, grilled meats, and the comforting, accessible cuisine that Fujimaki's restaurants served. But the wine was not the focus; it was a complement, a beverage, a commercial necessity rather than a passion.
The transformation came gradually, then suddenly. As Fujimaki worked in his restaurants, tasting wines, meeting distributors, learning the trade from the consumer side, he began to develop a palate and a curiosity that went beyond the conventional offerings. He encountered natural wine — perhaps in one of Tokyo's emerging natural wine bars, perhaps through a distributor who was ahead of the curve, perhaps through his own restless exploration — and recognised in it something that conventional wines lacked: vitality, unpredictability, a sense of being alive rather than manufactured. The natural wines he tasted were not always consistent; they were not always technically perfect; they sometimes surprised, sometimes disappointed, sometimes astonished. But they were never boring. And they spoke of a different relationship between the drinker and the maker — one of trust rather than standardisation, of participation rather than consumption, of discovery rather than reassurance.
The decision to leave the restaurant business and found a winery was not impulsive; it was the culmination of years of observation, tasting, and strategic planning. Fujimaki did not sell his restaurants and buy a vineyard on a whim; he researched, he visited wine regions, he studied the market, and he identified a gap that his particular skills could fill. Japan's natural wine movement was growing, but it was dominated by small, artisanal producers — often former urban professionals who had abandoned careers to pursue romantic visions of rural life, with limited capital, limited scale, and limited commercial infrastructure. Fujimaki saw an opportunity to create something different: a natural winery that combined the authenticity and minimal intervention of the movement's ideals with the organisational discipline, commercial acumen, and strategic vision that his military and restaurant careers had developed. He chose Yamagata — specifically Nanyo City, in the southeastern part of the prefectecture — for its established viticultural infrastructure, its favourable climate, and its relative proximity to the major markets of Tokyo and northern Japan. And in 2017, Grape Republic was born.
"Made of 100% Grapes. No additives, no sulfur, no selected yeasts, no enzymes, no tannins, no colourants, no flavourings. Just grapes, wild yeast, time, and the hands that guide them."
— Grape Republic Philosophy
Nanyo City & the Yamagata Valley
Nanyo City, where Grape Republic is located, sits in the southeastern part of Yamagata Prefecture — a region of river valleys, alluvial plains, and low hills that has been one of Japan's most productive agricultural areas for centuries. The climate is continental, with hot, humid summers, cold, snowy winters, and a growing season that is brief but intense. The soils are alluvial and volcanic, formed from the sediment of the surrounding rivers and the ash deposits of the region's active and dormant volcanoes, including the iconic Mount Zao to the north. These are fertile, well-drained soils that support not only viticulture but also the cherries, pears, and rice for which Yamagata is famous — a polycultural landscape that reminds the vigneron that wine is merely one crop among many, one expression of a terroir that has sustained human life for millennia.
Yamagata's viticultural history is long but uneven. The prefecture has produced grapes for over a century, primarily for the table grape market — the large, sweet, seedless varieties that dominate Japanese fruit consumption and that have made Yamagata one of the country's leading grape-producing regions. Wine grapes have always been a minority crop, grown by a small number of dedicated farmers who supplied the large industrial wineries that dominated the Japanese market until the natural wine revolution of the past two decades. The infrastructure that Fujimaki found when he arrived in Nanyo was therefore both an advantage and a challenge: established vineyards, experienced growers, and a logistical network for transporting fruit, but also a culture of industrial agriculture, chemical dependency, and the prioritisation of quantity over quality that characterises much of Japanese commercial farming.
Fujimaki's approach to viticulture was shaped by his natural wine philosophy and his commercial pragmatism. He did not attempt to convert the entire prefecture to organic farming overnight; he worked with selected growers, gradually introducing reduced-chemical and organic practices, building trust through fair prices and long-term contracts, and demonstrating that the quality premiums he paid for healthier fruit were sustainable and profitable. The vineyards that supply Grape Republic are a mix of estate-managed and contracted plots, all farmed according to a protocol that prioritises grape health, soil vitality, and the elimination of synthetic chemicals wherever possible. The specific varieties grown reflect both Yamagata's viticultural heritage and Fujimaki's winemaking ambitions: Muscat Bailey A, the Japanese hybrid that is the region's signature red; Delaware, the table grape that has been successfully transformed into wine by Yamagata's emerging natural winemakers; and international vinifera varieties including Chardonnay, Merlot, and others that thrive in the continental climate and alluvial soils.
The landscape around Nanyo is not dramatic — no snow-capped peaks looming over the vineyard, no terraced hillsides plunging to the sea, no ancient stone walls marking centuries of cultivation. It is a working agricultural landscape, practical and unromantic, of flat fields, irrigation canals, and farm buildings that serve function rather than beauty. But this very practicality is what makes it suited to Fujimaki's vision: a winery that is not a tourist destination or a luxury brand but a production facility, a place where grapes are transformed into wine with efficiency, consistency, and respect for the material. The amphorae that dominate the cellar — large clay vessels imported from Spain — stand in striking contrast to the utilitarian architecture of the winery building, their ancient, hand-formed curves a reminder that winemaking predates stainless steel and temperature control by millennia. They are the physical manifestation of Grape Republic's philosophy: a marriage of ancient technique and modern organisation, of natural process and strategic planning, of the romantic and the pragmatic.
Southeastern Yamagata, river valleys and alluvial plains. Continental climate: hot humid summers, cold snowy winters, brief intense growing season. Alluvial and volcanic soils from river sediment and volcanic ash deposits. Polycultural landscape: cherries, pears, rice, grapes. Over a century of viticultural history, primarily table grapes. Established infrastructure, experienced growers, logistical networks. A working agricultural landscape — practical, unromantic, suited to production.
Mix of estate-managed and contracted vineyards. Gradual transition from industrial to reduced-chemical and organic practices. Fair prices, long-term contracts, quality premiums for healthier fruit. Selected growers, trust-building, sustainable profitability. Muscat Bailey A — Yamagata's signature red. Delaware — table grape transformed into wine. International vinifera: Chardonnay, Merlot, others. Protocol prioritising grape health, soil vitality, elimination of synthetic chemicals.
Large clay vessels imported from Spain — the physical manifestation of Grape Republic's philosophy. Ancient hand-formed curves contrasting with utilitarian winery architecture. Neutral vessels providing gentle micro-oxygenation without oak flavour. Stable temperature conditions for fermentation and ageing. A marriage of ancient technique and modern organisation. The amphora as symbol: natural process, strategic planning, romantic and pragmatic united.
Japan's leading table grape region, now emerging as natural wine territory. Industrial wine culture being challenged by minimal-intervention pioneers. Infrastructure advantages: established vineyards, experienced growers, transport networks. Cultural challenges: chemical dependency, quantity-over-quality mentality. Grape Republic's role: demonstrating that natural wine can be commercially viable at scale. The military man's systematic approach applied to agricultural transformation.
Zero Sulfur & the Craighead Connection
At Grape Republic, the winemaking philosophy is expressed in four words: "Made of 100% Grapes." This is not merely a slogan; it is a technical specification, a quality standard, and a moral position. It means that the only ingredient in the wine is grapes — no added sulfur, no selected yeast strains, no enzymes, no tannins, no colourants, no flavourings, no stabilisers, no preservatives. The grapes are crushed, the wild yeasts that live on the skins initiate fermentation, and the wine develops according to its own logic, guided by the vigneron's observation and intervention but not controlled by the vigneron's technology and chemistry. This is natural winemaking in its most rigorous form: not low-sulfur or minimal-intervention, but zero-additive, zero-compromise, zero-explanation-needed. The wine is what the grape, the yeast, and the terroir make it. Nothing more, nothing less.
The zero-sulfur commitment is the most radical and the most consequential aspect of Grape Republic's production. Sulfur dioxide (SO2) is the single most common additive in winemaking, used since Roman times to prevent oxidation, inhibit microbial spoilage, and stabilise wine for transport and ageing. Even most "natural" wines contain some added sulfur — typically 20-40 ppm, sometimes less, rarely none. To produce wine with absolutely no added sulfur requires immaculate grape health, pristine cellar hygiene, meticulous temperature control, and a willingness to accept the risks that come with allowing wine to develop without chemical preservatives. Some wines will oxidise prematurely; some will develop volatile acidity or bacterial taint; some will be unstable in bottle, changing unpredictably, developing off-flavours, or refermenting. The zero-sulfur vigneron accepts these risks as the price of authenticity — and develops the skills, the protocols, and the intuition to minimise them without resorting to chemical intervention.
The amphorae are central to Grape Republic's zero-sulfur strategy. Imported from Spain, these large clay vessels — typically 300-500 litres, hand-formed and fired at low temperatures — provide a neutral, porous environment for fermentation and ageing that is fundamentally different from both stainless steel and oak. Unlike stainless steel, which is inert and impermeable, amphora allows gentle micro-oxygenation: the slow diffusion of oxygen through the clay walls softens tannins, stabilises colour, and encourages the development of complex secondary aromas without the aggressive oxidation that can occur in barrel. Unlike oak, which imparts flavours of vanilla, toast, and spice, amphora is completely neutral, allowing the pure expression of grape and terroir without the masking effect of wood. And unlike barrel, which requires constant topping, sulphuring, and maintenance, amphora is stable, durable, and relatively low-intervention once sealed. For zero-sulfur winemaking, the amphora offers a combination of gentle oxygen exposure and microbial stability that is difficult to achieve in any other vessel.
The collaboration with Alex Craighead — the New Zealand natural winemaker behind Don/Kindeli — has been formative for Grape Republic's technical development. Craighead, who trained in Germany and established his own zero-sulfur winery in Nelson, New Zealand, brought to Grape Republic the practical knowledge of how to make stable, delicious, commercially viable wine without any chemical additives. His influence is visible in the cellar protocols, the fermentation management, the blending decisions, and the quality control systems that distinguish Grape Republic from many of Japan's more improvisational natural wine producers. This is not to say that Grape Republic's wines are New Zealand wines made in Japan; they are unmistakably Yamagata in character, with the specific flavours of Muscat Bailey A, Delaware, and Yamagata's alluvial soils. But the techniques — the temperature management, the hygiene protocols, the blending strategies, the bottling procedures — bear the imprint of Craighead's rigorous, systematic approach to zero-sulfur winemaking. The collaboration is a transfer of technical knowledge across hemispheres, a conversation between two winemakers who share a commitment to natural process and commercial viability.
The winemaking at Grape Republic is therefore a unique synthesis: the military discipline and commercial acumen of Kazuomi Fujimaki, the ancient technique of Spanish amphorae, the international expertise of Alex Craighead, and the specific terroir of Yamagata's river valleys and volcanic soils. The Muscat Bailey A wines are fermented and aged in amphora, producing light-bodied, fragrant reds of strawberry and rose petal, with a savoury, earthy undertone that develops with bottle age. The Delaware wines — made from the table grape that Yamagata has cultivated for generations — are transformed through wild yeast fermentation and amphora ageing into wines of surprising complexity: floral and honeyed, with a gentle acidity and the body-soaking umami that is the signature of well-made natural wine. The international varieties — Chardonnay, Merlot, and others — are handled with the same restraint, producing wines that express Yamagata rather than imitating Burgundy or Bordeaux. And all of them share the Grape Republic signature: zero sulfur, wild yeast, amphora-aged, unmistakably alive.
The Amphora & the Zero-Sulfur Alchemy
The amphorae at Grape Republic are not merely vessels; they are the technical foundation of the zero-sulfur philosophy. Imported from Spain, these hand-formed clay containers — 300-500 litres, fired at low temperatures — provide a unique microenvironment for fermentation and ageing that makes additive-free winemaking commercially viable. The porous clay allows gentle micro-oxygenation: oxygen diffuses slowly through the walls, softening tannins, stabilising colour, and encouraging complex secondary aromas without the aggressive oxidation of barrel ageing or the complete anaerobicism of stainless steel. This gentle oxygen exposure is critical for zero-sulfur wine, which lacks the antioxidant protection that sulfur provides; the amphora's natural porosity achieves what chemistry cannot, stabilising the wine through physical rather than chemical means. The complete neutrality of clay — no vanilla, no toast, no spice — allows the pure expression of grape and terroir, the Yamagata soil and the Muscat Bailey A or Delaware fruit, without the masking effect of oak. And the thermal mass of thick clay walls provides temperature stability, reducing the risk of heat spikes that can trigger bacterial spoilage in unsulfured wine. The amphora is, in essence, a zero-sulfur winemaker's best ally: ancient technology solving modern problems, clay achieving what chemistry cannot, and the hands of Spanish potters providing the foundation for Japanese natural wine.
The Portfolio & the Cuvées
Grape Republic produces a focused portfolio of zero-sulfur, amphora-aged natural wines that express the character of Yamagata's viticultural heritage and the distinctive qualities of Muscat Bailey A, Delaware, and international varieties grown in the Nanyo region. All wines are made with wild yeast fermentation, zero added sulfur, and no additives of any kind — a commitment to natural winemaking that is both philosophical and technical, supported by the amphora ageing system and the quality control protocols developed in collaboration with Alex Craighead. The following represents the core cuvées, though the portfolio continues to evolve as Fujimaki refines his techniques, expands his grower network, and explores new expressions of the Yamagata terroir.
"Made of 100% Grapes. Not 99%. Not 99.9%. One hundred percent. Grapes, yeast, time, and the hands that guide them. Nothing else."
— Grape Republic
The Military Precision & the Natural Anarchy
To understand Kazuomi Fujimaki, one must understand the apparent contradiction that defines him: a military man who makes natural wine, an organiser who celebrates unpredictability, a strategist who embraces anarchy. The military teaches control — of self, of subordinates, of situations, of outcomes. Natural wine, in its purest form, teaches surrender — to the wild yeast, to the vintage, to the microbiome, to the countless variables that no amount of planning can fully anticipate. Fujimaki's genius lies in his ability to hold these opposites in productive tension: to bring the discipline, the systems, the strategic vision of his military and restaurant careers to the service of a winemaking philosophy that is, at its core, about letting go. The zero-sulfur commitment is not a rejection of control but a different kind of control — the control of hygiene, of temperature, of selection, of timing, of the thousand small decisions that create the conditions for natural transformation without chemical intervention. The amphora is not a rejection of technology but an ancient technology, chosen for its specific properties, integrated into a modern production system. The wild yeast is not chaos; it is the yeast that lives on the grapes, in the vineyard, in the cellar — a known, managed, understood population rather than an unknown, random, dangerous one.
The commercial acumen that Fujimaki developed in his six Italian restaurants is equally essential to Grape Republic's identity. Most natural wineries in Japan are small, undercapitalised, and commercially naive — founded by idealists who know how to make wine but not how to sell it, who understand fermentation but not cash flow, who can identify wild yeast strains but cannot identify their target market. Fujimaki is different. He understands distribution, pricing, branding, and customer relations because he has spent decades managing them. He knows that a wine that cannot reach its drinker is not a wine at all; that a philosophy that bankrupts its practitioner is not a sustainable philosophy; that the best wine in the world is worthless if it sits in a warehouse. Grape Republic's branding — the bold, simple "Made of 100% Grapes" — is not merely a philosophical statement; it is a commercial strategy, a differentiator in a crowded market, a promise that consumers can understand and trust. The consistency of the wines, the reliability of the supply, the professionalism of the presentation — these are not accidents; they are the products of a mind that has learned, through military and commercial experience, that excellence requires not merely inspiration but execution.
The collaboration with Alex Craighead represents another dimension of Fujimaki's strategic thinking: the recognition that expertise can be imported, that knowledge crosses borders, and that the best way to learn is from those who have already mastered what you seek to achieve. Craighead, with his German training and New Zealand experience, brought to Grape Republic a technical foundation for zero-sulfur winemaking that would have taken Fujimaki years to develop independently. But the collaboration is not mere outsourcing; it is a genuine partnership, a conversation between two winemakers who share a commitment to natural process and commercial viability. Craighead's influence is visible in the precision of the wines, the consistency of the quality, and the systematic approach to fermentation management that distinguishes Grape Republic from Japan's more improvisational natural wine producers. But the wines remain unmistakably Japanese — Yamagata grapes, Yamagata soils, Yamagata climate, expressed through the lens of zero-sulfur amphora winemaking. The New Zealand technique serves the Japanese terroir; the international collaboration strengthens the local identity.
The future of Grape Republic is tied to the maturation of Fujimaki's vision: the expansion of the grower network, the deepening of organic and biodynamic practices, the continued refinement of zero-sulfur techniques, and the gradual building of a brand that is recognised not merely in Japan's natural wine bars but in international markets where Japanese wine is still a curiosity rather than a category. The zero-sulfur commitment, once a radical position, is becoming a competitive advantage as consumers worldwide develop a taste for wines that are not merely natural in name but natural in fact — wines that they can drink without wondering what chemicals they are ingesting, wines that evolve in the bottle rather than remaining static, wines that express the vitality and unpredictability of living things. Fujimaki's military discipline, his commercial acumen, and his strategic vision position Grape Republic to capitalise on this trend — not by compromising its principles but by demonstrating that principles and profitability are not mutually exclusive, that the best natural wine is not the most expensive or the most obscure but the most honest, the most consistent, and the most accessible.
In an age of industrial wine production, of homogenised flavours and marketing-driven branding, Grape Republic stands as a radical alternative — not a small, romantic, underfunded artisanal project but a professionally managed, strategically planned, commercially viable natural winery that proves zero-sulfur winemaking can be scaled, systematised, and sustained. Kazuomi Fujimaki is not merely making wine; he is making a case — that natural wine need not be the province of the privileged few, that zero sulfur need not mean zero reliability, that ancient techniques can serve modern markets, and that a former military man with six Italian restaurants can become one of Japan's most important natural winemakers. His name — Grape Republic — is not merely a brand; it is a manifesto, a declaration of independence from the additives and interventions that dominate the wine industry, and a promise that the wine in the bottle is exactly what it claims to be: made of 100% grapes. Nothing more, nothing less, nothing else. The military precision, the natural anarchy, the Spanish amphorae, the New Zealand expertise, the Yamagata terroir: all united in one simple, profound, unanswerable commitment to authenticity.
Military control in service of natural anarchy. The apparent contradiction that defines Fujimaki: an organiser who celebrates unpredictability, a strategist who embraces chaos. Zero sulfur not as rejection of control but as different control — hygiene, temperature, selection, timing. The thousand small decisions that create conditions for natural transformation. Amphora as ancient technology integrated into modern production. Wild yeast as known, managed, understood population. Discipline and surrender, held in productive tension.
Six Italian restaurants' worth of commercial acumen applied to natural wine. Distribution, pricing, branding, customer relations — not accidents but strategy. "Made of 100% Grapes" as differentiator in crowded market. Consistency, reliability, professionalism — products of execution, not merely inspiration. The recognition that a philosophy that bankrupts its practitioner is unsustainable. Natural wine for the many, not the few. Principles and profitability as partners, not opponents.

