Wine glass
Encyclopedia
A wine glass is a type of glass
Glass
Glass is an amorphous solid material. Glasses are typically brittle and optically transparent.The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica plus Na2O, CaO, and several minor additives...

 stemware
Stemware
Stemware is drinkware that stands on stems above a base. It is usually made from glass, but may be made from ceramics or metals.Stemware includes:* Wine glasses* Champagne flutes* Chalices and goblets...

 that is used to drink and taste
Wine tasting
Wine tasting is the sensory examination and evaluation of wine. While the practice of wine tasting is as ancient as its production, a more formalized methodology has slowly become established from the 14th century onwards...

 wine
Wine
Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast. Yeast...

. It is generally composed of three parts: the bowl, stem, and foot. Selection of a particular wine glass for a wine style is important, as the glass shape can influence its perception
Perception
Perception is the process of attaining awareness or understanding of the environment by organizing and interpreting sensory information. All perception involves signals in the nervous system, which in turn result from physical stimulation of the sense organs...

.

Use

The traditionally held-to-be proper way to drink from a wine glass, especially when drinking white or otherwise chilled wine, is to grasp it by the stem. The most commonly accepted reasoning for this is to avoid fingerprints on the bowl, and to prevent the temperature of the wine from being affected by body heat.

Materials

High quality wine glasses are often made of lead crystal. Lead crystal glasses' advantages are not only primarily aesthetic. One factor of lead crystal is it is generally considered to have a higher index of refraction, thus changing the effect of light passing through them. Lead crystal is also rougher than glass on a microscopic level, allowing wine in the glass to breathe more efficiently when swirled in the bowl. They are also heavier. Using lead in the crystal matrix also offers several advantages in the material's workability during production. Wine glasses are generally not colored or frosted as this would impede the appreciation of its colour. An exception to this rule is the hock glass.

Shapes

The effect of glass shape on the taste of wine has not been demonstrated by any scientific study and remains controversial. It is however believed by some that the shape of the glass is important, as it concentrates the flavor and aroma (or bouquet) to emphasize the varietal
Varietal
"Varietal" describes wines made primarily from a single named grape variety, and which typically displays the name of that variety on the wine label. Examples of grape varieties commonly used in varietal wines are Cabernet Sauvignon, Chardonnay and Merlot...

's characteristic. One common belief is that the shape of the glass directs the wine itself into the best area of the mouth from the varietal. This is based on false ideas about the nature of taste buds on the tongue, such as the thoroughly debunked tongue map
Tongue map
The tongue map or taste map is a common misconception that different sections of the tongue are exclusively responsible for different basic tastes. It is illustrated with a schematic map of the tongue, with certain parts of the tongue labeled for each taste...

.

Generally, the opening of the glass is not wider than the widest part of the bowl.

Most wine glasses have stems, although "stemless" wine glasses are now available in a variety of sizes and shapes as well. These glasses are typically used more casually than their traditional counterparts, as they negate the benefits of using stemmed wine glasses.

Most common wine glasses can be divided into three types: red wine glasses, white wine glasses, and champagne flutes. Wine tumblers (without stems) are also increasing in popularity.

Red wine glasses

Glasses for red wine are characterized by their rounder, wider bowl, which increases the rate of oxidation. As oxygen from the air chemically interacts with the wine, flavor and aroma are subtly altered. This process of oxidation is generally more compatible with red wines, whose complex flavors are smoothed out after being exposed to air. Red wine glasses can have particular styles of their own, such as
  • Bordeaux glass: tall with a broad bowl, and is designed for full bodied red wines like Cabernet Sauvignon
    Cabernet Sauvignon
    Cabernet Sauvignon is one of the world's most widely recognized red wine grape varieties. It is grown in nearly every major wine producing country among a diverse spectrum of climates from Canada's Okanagan Valley to Lebanon's Beqaa Valley...

     and Syrah as it directs wine to the back of the mouth.
  • Burgundy glass: broader than the Bordeaux glass, it has a bigger bowl to accumulate aromas of more delicate red wines such as Pinot Noir
    Pinot Noir
    Pinot noir is a black wine grape variety of the species Vitis vinifera. The name may also refer to wines created predominantly from Pinot noir grapes...

    . This style of glass directs wine to the tip of the tongue.

White wine glasses

White wine glasses vary enormously in size and shape, from the delicately tapered Champagne flute, to the wide and shallow glasses used to drink Chardonnay. Different shaped glasses are used to accentuate the unique characteristics of different styles of wine. Wide mouthed glasses function similarly to red wine glasses discussed above, promoting rapid oxidization which alters the flavor of the wine. White wines which are best served slightly oxidized are generally full flavored wines, such as oaked chardonnay. For lighter, fresher styles of white wine, oxidization is less desirable as it is seen to mask the delicate nuances of the wine. To preserve a crisp, clean flavor, many white wine glasses will have a smaller mouth, which reduces surface area and in turn, the rate of oxidization. In the case of sparkling wine, such as Champagne or Asti, an even smaller mouth is used to keep the wine sparkling longer in the glass.

Champagne flutes

Champagne flutes are characterised by a long stem with a tall, narrow bowl on top. The shape is designed to keep sparkling wine
Sparkling wine
Sparkling wine is a wine with significant levels of carbon dioxide in it making it fizzy. The carbon dioxide may result from natural fermentation, either in a bottle, as with the méthode champenoise, in a large tank designed to withstand the pressures involved , or as a result of carbon dioxide...

 desirable during its consumption. Just as with wine glasses, the flute is designed to be held by the stem to help prevent the heat from the hand from warming the liquid inside. The bowl itself is designed in a manner to help retain the signature carbonation in the beverage. This is achieved by reducing the surface area at the opening of the bowl. Additionally the flute design adds to the aesthetic appeal of champagne, allowing the bubbles to travel further due to the narrow design, giving a far more pleasant visual appeal.

Sherry glass

A sherry glass is drinkware generally used for serving aromatic alcoholic beverage
Alcoholic beverage
An alcoholic beverage is a drink containing ethanol, commonly known as alcohol. Alcoholic beverages are divided into three general classes: beers, wines, and spirits. They are legally consumed in most countries, and over 100 countries have laws regulating their production, sale, and consumption...

s, such as sherry
Sherry
Sherry is a fortified wine made from white grapes that are grown near the town of Jerez , Spain. In Spanish, it is called vino de Jerez....

, port, aperitif
Aperitif
Apéritifs and digestifs are alcoholic drinks that are normally served with meals.-Apéritifs:An apéritif is usually served before a meal to stimulate the appetite. This contrasts with digestifs, which are served after a meal for the purpose of aiding digestion...

s, and liqueur
Liqueur
A liqueur is an alcoholic beverage that has been flavored with fruit, herbs, nuts, spices, flowers, or cream and bottled with added sugar. Liqueurs are typically quite sweet; they are usually not aged for long but may have resting periods during their production to allow flavors to marry.The...

s, and layered shooters. An ISO-standard sized sherry glass is 120 millilitre (1.080010800108E-08 imp fl oz). The copita, with its aroma-enhancing narrow taper, is a type of sherry glass.

Boccalino

A Boccalino is a mug
Mug
A mug is a sturdily built type of cup often used for drinking hot beverages, such as coffee, tea, or hot chocolate. Mugs, by definition, have handles and often hold a larger amount of fluid than other types of cup. Usually a mug holds approximately 12 fluid ounces of liquid; double a tea cup...

 used in Ticino
Ticino
Canton Ticino or Ticino is the southernmost canton of Switzerland. Named after the Ticino river, it is the only canton in which Italian is the sole official language...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

, to drink local wine (Merlot
Merlot
Merlot is a darkly blue-coloured wine grape, that is used as both a blending grape and for varietal wines. The name Merlot is thought to derive from the Old French word for young blackbird, merlot, a diminutive of merle, the blackbird , probably from the color of the grape. Merlot-based wines...

 or similar). It has a volume of 0.2 liters. The Boccalino is also a popular souvenir for tourists.

Decoration

In the 18th Century, glass makers would draw spiral patterns in the stem as they made the glass. If they used air bubbles it was called an airtwist; if they used threads, either white or colored, it would be called opaque twist.

ISO Wine tasting glass

The ISO has standardized a series of glasses for wine tasting. They are stemmed with elongated tapered bowls, with capacities of 120 (for sherry), 210, 300, or 410 millilitres.ISO 3591:1977

External links

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