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.

thorough-explanation

2025/8/22

The Power of Yeast | The Relationship Between Wine Aging and Lees

Yeast is indispensable in winemaking. It is only through the presence of yeast that grape juice can transform into wine. While yeast may be considered the protagonist of winemaking, its stage of activity is not limited to the period of alcoholic fermentat …

youtube

2025/8/21

The Truth About Natural Wine

https://www.youtube.com/watch?v=Z-SccwUyehI The term “natural wine” remains a perpetual source of heated debate among wine enthusiasts. This phrase has become so ubiquitous that it jumps out at us from Tokyo’s streets in combinations like “natural wine an …

qualitycontrol

2025/8/21

Wine Transportation, Storage, and Temperature Management | Understanding the Effects of Heat

During hot summer months, specifying refrigerated delivery for wine shipments has become almost standard practice. For wines delivered to homes, storing them in dedicated wine cellars whenever possible is widely recommended. The reason these temperature-r …

qualitycontrol

2025/8/20

Wine and Cork | The Impact of Cork on Wine Flavor

Cork is the quintessential material for sealing wine bottles. Today, cases of using alternative closures such as screwcaps to seal wine bottles are increasing. Winemakers have come to freely choose from multiple options based on their own philosophy. Agai …

column

2025/8/19

Wine Minerality | Exploring the True Nature of “Taste,” “Aroma,” and “Sensation” in Mineral Character

When drinking wine, there is an expression you will inevitably encounter somewhere along the way: “mineral character” or “minerality.” Even those who haven’t heard these terms yet will almost certainly encounter them in the relatively near future, as they …

oenology thorough-explanation

2025/8/17

Complete Guide: Rosé Wine Production Methods and Their Characteristics

I once encountered an observation that “rosé wines are difficult to imagine even when you know their origin and grape variety.” While this is a fascinating perspective, as someone actually involved in winemaking, I find myself thinking, “Yes, that might i …

viticultur

2025/8/16

How Long Will Premium Vineyards Remain Premium? | Vineyard Location

On September 12th, the winery where I work harvested grapes for the first time in the 2019 season. While grape growth wasn’t as abnormally accelerated as in 2018, when the harvest came nearly a month earlier than usual, 2019 still marked the beginning of …

viticultur

2025/8/14

Understanding Soil in Wine

When introducing wines in Japan, it seems that reference to the type of soil in which the grapes were cultivated is frequently made as one of the elements expressing a wine’s character. While this tendency is not limited to Japan alone, it appears particu …

oenology

2025/8/14

Where Does the Iron Taste Come From? An Exploration of Minerals

Recently, I had the opportunity to taste wines at a winery located in Enzan, Yamanashi Prefecture. During the tasting of several wines from their lineup, one particular characteristic struck me strongly: the taste of iron. When I asked the winemaker about …

thorough-explanation

2025/8/8

A Comprehensive Guide to Phenols and Tannins in Wine

Minerals and tannins. Can anyone truly claim they have never used these terms? That’s how established minerals and tannins have become as tasting expressions in wine. However, few people can properly explain the specific meanings these expressions refer t …