viticultur

The Northern Limit of Viticulture and the Rise of Disease Pressure

2026/9/1

There is a region known as the wine belt. It was considered suitable for wine grape cultivation, spanning roughly 30–50°N and 30–40°S latitude. The Rheingau in Germany sits at 50°N. This region was long regarded as the northern limit of viticulture. That …

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viticultur

Biostimulants | A Category That Need Not Explain Why It Works

2026/8/21

The word “biostimulant” turns up more and more often on the shelves of agricultural and horticultural suppliers, and not only in viticulture. The descriptions on those shelves tend to run along the lines of invigorating the plant, or activating it. When t …

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grape-variation

Dismantling the Piwi Safety Myth: What Resistance Genes Can and Cannot Do

2026/7/2

The word “Piwi” increasingly needs no explanation. It has become a trend term in winegrape growing. Piwi is an abbreviation of the German Pilzwiderstandsfähige Rebsorten, meaning fungus-resistant grape varieties. These varieties are presented as having be …

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viticultur

The Overlooked Crisis in the Vineyard: Heading Off a Second Phylloxera Catastrophe

2026/6/27

Climate change and global warming are reshaping how wine is made. Winters have grown shorter and warmer, and budbreak now arrives earlier in the season. As a result, damage from late frost and hail has become more widespread. Shifts in rainfall patterns i …

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oenology

Winemaking Technique | What Is Cold Maceration?

2026/4/19

Maceration is a winemaking technique with a surprisingly thin body of precise, publicly available information despite its widespread use. This article takes cold maceration (cold soak) as its central case and examines both the commonly cited benefits and …

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qualitycontrol

The Diversity of Brett Reception | Beyond the Defect-vs-Character

2026/4/3

How do you react when Brett comes up in a conversation about wine? Some may wonder why bread appears in the discussion — the resemblance goes no further than the sound of the word. What drifts from the glass is a distinctive smell rarely encountered in ev …

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oenology

Are Dessert Wines Never Red?

2026/3/19

Preferences in wine vary widely, but few people seem to dislike the profound sweetness that characterises dessert wines. Even setting aside Château d’Yquem, the mere thought of a Riesling Trockenbeerenauslese from an exceptional vintage is enough to bring …

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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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wine

2025/11/9

Does Wine Glass Selection Alter the Taste of Wine?

Recently, a wine glass produced by a renowned Master of Wine (MW) was introduced in Japan, garnering considerable attention. This particular MW has consistently used the same glass for both red and white wines throughout many years of professional practic …

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 …

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 …

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 …

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 …

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 …

viticultur wine

2025/12/3

Understanding South African Wine Through Data

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 …

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 …

grape-disease viticultur

2025/7/29

Rising Temperatures Cause Widespread Damage: Understanding Grape Sunburn

With the arrival of summer, grapevines in vineyards continue their growth cycle. Currently, vineyard operations are proceeding simultaneously with lateral shoot removal, leaf removal, and shoot tip cutting. During this period, Germany experienced two days …

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 …

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 …

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

2025/8/24

Winemaking Techniques Using Frozen Grapes

Freshness is the lifeblood of fruit. This holds true for winemaking as well. Therefore, harvested grapes should be processed into wine as quickly as possible—every minute, every second counts. Many people may hold this image of winemaking. The topic we ex …

oenology

2025/10/7

The Impact of Ascorbic Acid Addition on Wine

In a recently published article titled “Wine Off-Flavors | UTA / ATA,” I discussed how aged nuances detected in what should be young white wine may indicate the presence of UTA, one type of off-flavor. In that article, I introduced the addition of ascorbi …

oenology

2025/11/18

The Relationship Between Color, Flavor, and Aroma in Rosé Wines: Considerations for Rosé Production

Wine can be classified in several ways. One of the most fundamental classifications is based on color. The most representative categories are white wine, red wine, and rosé wine. However, wine color classifications extend beyond these three. Yellow wine ( …

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 …

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

2025/7/21

Flor Yeast: The Film-Forming Yeast That Shapes Wine Character Through Biological Aging

Wine aging is a crucial element that deepens the wine’s flavor profile. While wines generally evolve through oxidative aging, an alternative method called “biological aging” is sometimes employed during the winemaking process. Biological aging is a matura …

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 …

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

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 …

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