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Still, Sparkling, or Fortified Wines: The Guide to Wine Styles

Introduction

 

Until now, we have explored how grapes are transformed into wine and how the creation of different colors is organized in cellars. However, limiting wine to its color alone would be overly simplistic. When you browse the aisles of a wine shop or the menu of a fine restaurant, you quickly realize that the wine world revolves around other fundamental dimensions. The presence of bubbles, the amount of sugar remaining in the bottle, and the alcohol content are all criteria that define radically different wine families.

To become an informed consumer, it is essential to understand how these elements fit together. In this lesson, we will analyze the classification of wines beyond their color. We will study the difference between still and sparkling wine, decode the real meaning of a wine's alcohol level, and explore the winemaking secrets of natural sweet wines and fortified wines.

 

Still Wines and Sparkling Wines: The Art of Taming Bubbles

 

The first major distinction that arises when analyzing a wine concerns its carbonated texture. Carbon dioxide, a natural byproduct of fermentation, can either be fully released or trapped to create movement in the glass.

What Is a Still Wine?

In everyday language, what we consume daily is qualified as normal wine. In Europe, professionals use the technical term still wine to designate bottles that do not contain bubbles. These wines account for the vast majority of global production.

Under European legal standards, a standard still wine must have an alcohol content between 8.5 and 15 degrees, as well as a minimum acidity of 3.5 grams per liter. The absence of bubbles allows you to appreciate the pure texture of the wine, its balance, and its fluidity without physical gas interference on your taste buds.

The Magic of Sparkling Wines

Opposite to still wines, sparkling wines integrate carbon dioxide into the heart of their liquid structure. This large family includes prestigious Champagne, but also other high-quality appellations such as Crémants from Burgundy, Alsace, or Loire, as well as Clairette de Die.

These wines are made from various grape varieties, including Chardonnay, Pinot Noir, Pinot Meunier, Riesling, Chenin, Sauvignon, Muscat, or Mauzac. When tasting a sparkling wine, attention is focused on the behavior of the mousse and bubbles. A high-quality product is distinguished by very fine bubbles that circulate slowly and regularly from the bottom of the glass to the top, forming what specialists call a chimney.

 

Wine Alcohol Level: Understanding the Historical 14 Degree Limit

 

Alcohol content is mandatory information on labels, expressed in degrees or percentage. This rate is not arbitrary, as it is closely tied to the chemistry of fermentation and regulations.

The Natural Barrier of Fermentation

Historically, the 14 degree threshold marked the line between classic table wines and fortified wines. When yeasts transform the sugar of ripe grapes into alcohol, fermentation stops naturally and exceptionally beyond this boundary. Most traditional still wines therefore display a naturally occurring alcohol level between 12 and 13.5 degrees.

Exceptions in Warm Climates

Today, this 14 degree barrier is challenged by climate change and the establishment of vineyards in very sunny regions. In hot areas, grapes ripen intensely and become loaded with a very high amount of sugar. After fermentation, the alcohol level of these wines frequently exceeds the 14 degree mark, without any addition of external alcohol. This is notably the case for certain Californian wines made from Zinfandel, Cabernet, or Chardonnay.

 

Beyond Classic Fermentation: VDN, VDL, and Mistelles

 

To obtain richer, warmer, and often sweeter wines, winemakers use specific winemaking methods involving the addition of wine spirits.

Natural Sweet Wine (VDN), a Controlled Fermentation Halt

Natural sweet wine is the result of a technical process called mutage. This operation consists of adding neutral alcohol of viticultural origin to grape juice during or at the end of fermentation. The introduction of this alcohol immediately kills the yeasts and stops their activity.

Since the yeasts stop working before consuming all the sugar, the wine retains significant natural sweetness in the form of residual sugars. Depending on the exact moment the winemaker performs mutage, the finished product will be drier or sweeter, but it will always display an alcohol content higher than that of a classic wine, generally between 15 and 18 degrees. The most famous examples of natural sweet wines are Port and Sherry (fortified with grape brandy), as well as major French VDNs like Banyuls, Maury, or Rivesaltes (fortified with neutral alcohol).

Liqueur Wine (VDL) or the Art of Mistelles

Liqueur wine, also known by the technical name mistelle, relies on a different principle. Here, fermentation is not allowed to begin. The winemaker directly mixes fresh grape must (unfermented grape juice) with grape brandy.

The resulting product undergoes no traditional alcoholic fermentation, and all of its sugar comes directly from the fresh fruit. This mixture is then subjected to aging for varying lengths of time in barrels. In France, the most renowned liqueur wines are Pineau des Charentes (made with Cognac), Floc de Gascogne (obtained from Armagnac), and Macvin du Jura (made from marc).

 

Sweetness Without Added Alcohol: Over-Ripening and Late Harvest (Passerillage)

 

It is entirely possible to obtain a wine rich in sugar without resorting to external alcohol. Winemakers accomplish this by leveraging the natural concentration of sugar in the fruit on the vine.

To achieve this, two main methods are applied:

  • Noble Rot: Caused by a microscopic fungus under specific humidity conditions, it pierces the grape skin and evaporates water, concentrating sugar and aromas inside the berry.

  • Passerillage: This technique involves leaving grapes to ripen for an extended period on the vine or drying them on straw beds after harvest. This drying of the berries concentrates the juice dramatically before pressing, producing true nectars.

 

Decoding Sugar on Labels: From Brut to Demi-Sec

 

For sparkling wines, the perception of sweetness on the palate is strictly regulated. The amount of residual sugar present in the bottle after the second fermentation determines the category indicated on the label.

The Official Sweetness Scale

Here is the official scale of sweetness categories, ordered from driest to sweetest:

  • Extra-brut: Less than 6 grams of sugar per liter. If the level is below 3 grams and no sugar has been added, the producer may use terms like brut nature, zero dosage, or non-dosed.

  • Brut: Less than 12 grams of sugar per liter. This is the most popular and widely sold style globally.

  • Extra-dry: Between 12 and 17 grams of sugar per liter.

  • Sec: Between 17 and 32 grams of sugar per liter.

  • Demi-sec: Between 32 and 50 grams of sugar per liter.

  • Doux: More than 50 grams of sugar per liter.

The Great Paradox of the Term "Extra-dry"

There is a very common semantic trap for beginner consumers. Contrary to what its literal translation implies, a sparkling wine labeled "Extra-dry" is not the driest. It actually contains more sugar than a wine classified in the Brut or Extra-brut category.

Market behavior in this regard is interesting. While Europeans overwhelmingly favor the Brut style, the best-selling sparkling wine in the United States is an Extra-dry cuvée.

 

Production Methods for Sparkling Wines in the Cellar

 

Creating bubbles within the original still wine relies on two major philosophies of work.

The Traditional Method

Considered the gold standard, this method consists of conducting a second fermentation directly inside the closed bottle. Carbon dioxide slowly dissolves into the liquid over the months, while the wine acquires a rich, complex texture through prolonged contact with fermentation lees.

The Charmat Method

This method favors a collective approach in a sealed tank. Still wine receives an addition of sugar and yeasts inside a large, airtight tank. The carbon dioxide generated by this second fermentation remains trapped in the pressurized container and dissolves into the wine kept at low temperatures. The now-sparkling liquid is filtered under pressure to remove sediment before receiving a dosage liqueur to adjust its final sweetness right before bottling. This method preserves the fruity and direct freshness of the original grape.

 

Storage Advice for Sparkling Wines

 

A very common mistake is storing a bottle of sparkling wine in the refrigerator for several weeks while waiting for a special occasion. Professionals strongly advise against this practice. Prolonged cold temperatures and the continuous vibrations from the refrigerator motor severely alter the structure of the bubbles and harm the proper release of delicate wine aromas.

It is therefore recommended to place your bottle in the fridge only the day before tasting. To best appreciate its qualities, make sure not to serve the wine ice-cold, as a serving temperature between 7 and 9 degrees Celsius is ideal.

 

Conclusion: What Wine Structure Reveals

 

By mastering the classification of wine styles, you now have a complete orientation map to navigate the world of wine:

  • The choice between still and sparkling wine determines the impact of carbonated texture on your taste sensations.

  • The alcohol level and the amount of residual sugar define the profile and body of the bottle.

  • Enriched styles like natural sweet wine and liqueur wine offer intense, complex flavor profiles ideal for stepping off the beaten path.

Now that you understand the scientific theory behind wine creation, its colors, and its different styles, it is time to learn how to taste it methodically.

See you in the next lesson to begin our second chapter dedicated to sensory art, where we will study the very first step of tasting: visual examination and analyzing the color of a wine.

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