fermentation

A Technique for Controlling Spontaneous Fermentation in Winemaking: Pied de Cuve

2026/2/12

When making one’s own wine, few producers have never hesitated over the choice of whether to ferment with active dry yeast or to rely on indigenous microorganisms—so-called “wild” yeasts—present on grapes and in the winery. If the priority is fermentation …

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viticultur

Pruning Wine Grapevines: Sap Flow and Longevity Through the Lens of Fundamentals and History

2026/1/14

Pruning is one of the most critical operations carried out in vineyards. In viticulture, pruning refers to removing unnecessary shoots and canes that have grown over the season, leaving only those required for the coming production cycle. This work is per …

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oenology wine

Wine and Barrel-Derived Extracts: Phenolic Compounds and Oak-Related Aromas

2025/12/22

This article focuses on the compounds extracted from wooden barrels during wine aging and their effects on wine. Discussions of barrel aging are often reduced to the notion of “oak aroma,” with an emphasis on aromatic attributes alone. In practice, howeve …

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thorough-explanation

Myths and Realities of Whole-Cluster Fermentation: How Grape Stems Affect Wine

2025/12/11

In the context of winemaking, you may have encountered terms such as “destemming” and “whole-cluster fermentation.” Both refer to how grape bunches are handled at the point of vatting. A grape cluster consists of many berries attached to a green, stem-lik …

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oenology thorough-explanation vinnatural

Bio and “Natural”: A Winemaker’s View from the Cellar

2025/12/10

Whenever I occasionally post about “natural wine” on X (formerly Twitter), those posts tend to be shared relatively widely for my account size. This simply indicates how many people react to this particular keyword. In recent years, especially in Japan, t …

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qualitycontrol

The Relationship Between Fill Level and Wine Quality: What the Headspace Reveals

2025/12/8

In the context of mature wines—those that have spent a decade or several decades in bottle—the fill level is often used as a quality indicator. Some importers and professional merchants routinely assess fill height and decline to ship bottles that fall be …

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qualitycontrol

Wine Flavour and Glycerol

2025/12/5

Wine exhibits remarkable diversity in both flavour and aroma. Even wines produced in the same region during the same vintage never show completely identical sensory profiles. Moreover, when a single producer vinifies grapes from the same vineyard under id …

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viticultur wine

Understanding South African Wine Through Data

2025/12/3

Why South African Wines Deliver Exceptional Quality at Accessible Prices South African wines have become indispensable in the global market as leading examples of high-quality yet affordable wines. While Chile once dominated this category, South Africa is …

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viticultur

Foundations of Grapevine Rootstocks

2025/12/2

According to statistics published by the International Organisation of Vine and Wine (OIV), the global vineyard area in 2022—encompassing wine grapes as well as table grapes, raisins, and juice grapes—amounted to approximately 7.3 million hectares.Althoug …

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sales-strategy

A New Format for Wine: Bag-in-Box

2025/11/30

Bag-in-Box (BIB) packaging has gained notable traction in recent years, particularly because it suits household consumption and large-volume use. A BIB consists of a flexible pouch containing wine housed within a cardboard outer box. Most packages hold at …

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vinnatural

2025/9/13

Why People Buy Natural Wine

I would like to introduce the content of a fascinating article published in the German wine magazine “der deutsche Weinbau.” Image or Sensation? The title of this article is “Image vs. Sensorik.” If we translate this somewhat freely, it becomes “Image or …

oenology wine

2025/12/22

Wine and Barrel-Derived Extracts: Phenolic Compounds and Oak-Related Aromas

This article focuses on the compounds extracted from wooden barrels during wine aging and their effects on wine. Discussions of barrel aging are often reduced to the notion of “oak aroma,” with an emphasis on aromatic attributes alone. In practice, howeve …

sparklingwine

2025/11/12

The Science of Bubbles: Understanding the Mechanism Behind Sparkling Wine’s Appeal

Sparkling wine is an indispensable element of celebrations and gatherings, extending far beyond Christmas and New Year festivities. The sight of bubbles ascending through a flute glass alone can evoke a sense of festivity in the consumer. Sparkling wine i …

qualitycontrol wine

2025/6/28

Wine Bottle Storage: Vertical vs. Horizontal Storage – Which is Correct?

When storing wine, there’s probably one question that everyone has wondered about at least once: how should the bottle be positioned? Should wine bottles be stored horizontally, or should they not be stored vertically? A quick search reveals many explanat …

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 …

sparklingwine thorough-explanation

2025/8/26

Complete Guide | How Sparkling Wine is Made

Sparkling wine, epitomized by Champagne, is an indispensable element at parties and other festive occasions. Have you ever wondered how this effervescent wine containing carbon dioxide gas is actually produced? While explanations of production methods are …

viticultur

2025/12/2

Foundations of Grapevine Rootstocks

According to statistics published by the International Organisation of Vine and Wine (OIV), the global vineyard area in 2022—encompassing wine grapes as well as table grapes, raisins, and juice grapes—amounted to approximately 7.3 million hectares.Althoug …

viticultur

2026/1/14

Pruning Wine Grapevines: Sap Flow and Longevity Through the Lens of Fundamentals and History

Pruning is one of the most critical operations carried out in vineyards. In viticulture, pruning refers to removing unnecessary shoots and canes that have grown over the season, leaving only those required for the coming production cycle. This work is per …

viticultur wine

2025/11/26

Wine, Soil, and Terroir | Slate Color and Wine Character

When explaining the distinctive character of wine, the discussion often relates to terroir. Soil is one of the elements that constitute terroir. There are numerous types of soil. Alongside clay and limestone, Schiefer occupies a significant position among …

viticultur

2025/8/5

Is Germany the Northern Limit of Viticulture?

When people begin studying wine, many learners are taught that “wine grape cultivation takes place between 30° and 50° North latitude and 30° and 40° South latitude,” aren’t they? Then, when they move on to the chapter dealing with German wines, they like …

grape-disease viticultur

2025/7/29

The Three Major Diseases of Wine Grapes | Downy Mildew: Causes and Control Measures

There is one disease that grape growers particularly fear during rainy years: downy mildew. Whether dealing with wine grapes or any other cultivated plants, the battle against diseases is unavoidable. Vineyards encounter various diseases, but the most pro …

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 …

oenology

2025/8/5

Can Concrete Transform Winemaking?

Attention is returning to wines that are fermented and aged in concrete vessels. Concrete is a building material very familiar to modern people. While concrete is strongly associated with building exteriors and walls, in winemaking it serves as a material …

oenology wine

2025/12/22

Wine and Barrel-Derived Extracts: Phenolic Compounds and Oak-Related Aromas

This article focuses on the compounds extracted from wooden barrels during wine aging and their effects on wine. Discussions of barrel aging are often reduced to the notion of “oak aroma,” with an emphasis on aromatic attributes alone. In practice, howeve …

oenology off-flavor viticultur wine

2025/10/11

Wine Off-Flavor | UTA / ATA

You tasted a white wine at a winery or wine shop and liked it enough to purchase it. However, you felt it was still a little early for drinking, so you decided to let it rest a bit longer in your home cellar. Six months later, at the dinner table. You kne …

oenology

2025/9/3

Alcohol Adjustment in Wine | Considering Water Addition

Global temperatures are rising due to climate change, accelerating the growth of wine grapes accordingly. Warmer winters have caused grape budbreak to occur earlier, and through increasingly hot summers, we can now harvest grapes that are more mature than …

oenology

2025/8/1

Wine, Acids, and Lactic Acid Bacteria | Understanding MLF

Acids are indispensable elements in wine. However, acids are inappropriate whether they are too abundant or too scarce. The overall balance is extremely important. Wine contains multiple acids, but from a winemaking perspective, tartaric acid and malic ac …

oenology thorough-explanation vinnatural

2025/12/10

Bio and “Natural”: A Winemaker’s View from the Cellar

Whenever I occasionally post about “natural wine” on X (formerly Twitter), those posts tend to be shared relatively widely for my account size. This simply indicates how many people react to this particular keyword. In recent years, especially in Japan, t …

youtube

2025/7/31

Exploring Wine Diversity

https://www.youtube.com/watch?v=l3zcrR39d8Q In recent years, the concept of “diversity” has become a frequent topic of discussion within the wine industry. However, this diversity does not merely refer to variations within traditional frameworks such as d …

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 …

youtube

2025/7/31

The Truth About “Good Vineyards” in Wine

https://www.youtube.com/watch?v=O9hVTlhyZDc Among wine enthusiasts, the belief that “good vineyards” produce quality wines is widely accepted. Wines from vineyards with classifications such as Grand Cru or Premier Cru are often perceived as “distinctly di …

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