About
About Nagi
I work from both viticulture and winemaking to help build the technical foundation of wineries. Rather than setting direction from the outside, I prioritize working from shared assumptions — organizing options and trade-offs, and translating them into executable form.
Current Position
Drawing on viticulture and winemaking experience developed over eleven years in Germany, I translate that expertise into forms applicable to Japanese production contexts. I returned to Japan at the end of August 2024 and founded Nagi wines as an independent viticulture and winemaking specialist, with the aim of contributing to the Japanese wine industry.
Background
- Returned to Japan end of August 2024 (11 years in Germany)
- Studied viticulture and oenology at Geisenheim University
- Worked at multiple wineries in Germany, including as head winemaker
Consulting cases are listed under Cases.
Areas of Expertise
Rather than expanding the range of what can be done, the focus is on designing systems that function within real-world constraints. Viticulture and winemaking are not treated as separate domains — they are handled as a chain of decisions.
Viticulture
- Vigor and yield design
- Pruning, canopy management, and work planning
- Vineyard condition assessment and prioritization
Winemaking
- Fermentation and quality management
- Process design and documentation
- Articulating decision criteria that ensure reproducibility
Stance
Not "how it should be done" — but "how you want it to be done"
The direction is first made explicit as the winery's own intention. From that agreed foundation, we organize multiple technical options and trade-offs, then support decision-making with documentation and reproducibility in place.
Site conditions and growing environment are treated as given — but not fixed as ideology. They are examined in a verifiable form against actual conditions and reproducibility.
Writing and Media
Longer articles and technical writing are published on external platforms. Links are organized below.
Start with Clarification
Before deciding on a service, clarifying current conditions comes first. Entry points include the free tasting review and the contact form.