Nagi

Holds a degree in Viticulture and Enology from Geisenheim University in Germany. Served as Head Winemaker at a German winery. Experienced viticulturist and enologist. Currently working as an independent winemaker and consultant specializing in both viticulture and enology.

wine

2025/11/9

Glass Shape and Wine Perception: Does Glass Form Alter Wine Enjoyment?

Many wine enthusiasts find their cupboards filled with an extensive collection of wine glasses. Others may appreciate wine bars that serve wines in multiple glass types tailored to different wines. The marketplace offers an extraordinary variety of wine g …

off-flavor

2025/11/8

How Light Changes Wine Aroma | Light-Struck Flavor

Light-struck flavor, or “nikkoushuu” in Japanese. The name might evoke images of freshly laundered white sheets fluttering under a clear blue sky, or the pleasant scent of sunshine when wrapped in those sheets. Unfortunately, that is not what this term re …

Amphora Historically Archaeology  - Makalu / Pixabay

oenology qualitycontrol

2025/11/7

The Relationship Between Wine, Tradition, and Vessels | Examining the Meaning of Qvevri and Bocksbeutel

There are vessels that have been traditionally used in winemaking for centuries. When we think about it carefully, there may be cases where we cannot clearly explain why we continue to use them. Why do we use qvevri? What makes Bocksbeutel superior to ord …

column

2025/11/6

The Outside World is Filthy

The Reality of Microbial Contamination How many of you have ever heard the term “microbial contamination”? Working in winemaking, albeit in a small corner of the world, one encounters various challenges. Wine often carries an image of luxury and high soci …

wine

2025/11/5

Is It Really True That Wine Tastes Different from Vineyard to Vineyard?

When discussing the taste of wine, haven’t you often heard the phrase “wine tastes different from vineyard to vineyard”? In fact, this statement merely describes something extremely obvious. What’s more, if you find yourself convinced by this narrative, y …

qualitycontrol

2025/11/4

Wine Oxidation: The Influence of Metals in Wine

Have you ever opened a bottle of wine you were looking forward to drinking, only to encounter a sulfur-like odor? When mild, this aroma is sometimes described as flint or struck match and can even be viewed favorably in wines made from certain grape varie …

viticultur

2025/11/2

Frost Protection Methods in Vineyards

Recently, I wrote an article about how earlier budbreak in grapevines increases the risk of frost damage. But do you know what methods exist to protect against this frost damage? Traditional Method: Warming by Open Fires The most traditional countermeasur …

sales-strategy

2025/10/30

Wine Labels Create the Taste Experience

When you decide to buy wine and head to the wine section, you’ll find countless labels lined up before you. If you’ve already decided which bottle to buy, that’s one thing, but if not, how do you make your choice? Country, region, vineyard, grape variety, …

oenology

2025/11/8

The Science of Extraction in Winemaking: Dynamic Equilibrium and the Limits of Optimization

Extraction is a crucial operation in winemaking, particularly for red wines. It affects every aspect of wine, from color intensity to aging potential. In winemaking, extraction refers to the transfer of compounds contained in grape skins and seeds into th …

qualitycontrol

2025/10/20

Understanding Biogenic Amines in Wine: A Foundational Guide

Many of you may be familiar with names like histamine, tyramine, or dopamine. These substances are called “biogenic amines.” Recently, discussions about biogenic amines (BA) in relation to wine have become increasingly common. Biogenic amines occupy a som …