The Styles of Port Wine
Port is the world’s greatest fortified (alcohol-added) red wine. Port takes its name from the city of Oporto, situated where Portugal's Douro River empties into the Atlantic Ocean. But its vineyards are far away, in the hot, mountainous Douro Valley. Port wine is fermented and fortified in Douro Valley, and then most of it travels downriver to the coast.
Although all Port is sweet, and most of it is red, a zillion styles exist. The styles vary according to the quality of the base wine (ranging from ordinary to exceptional), how long the wine is aged in wood before bottling (ranging from 2 to 40-plus years), and whether the wine is from a single year or blended from wines of several years.
Following is a brief description of the main styles, from simplest to most complex:
White Port: Made from white grapes, this gold-colored wine can be off-dry or sweet. Served with tonic and ice, white Port can be a bracing warm-weather apéritif.
Ruby Port: This young, non-vintage style is aged in wood for about three years before release. Fruity, simple, and inexpensive, it’s the best-selling type of Port. If labeled Reserve or Special Reserve, the wine has usually aged about six years and costs a few dollars more.
Vintage Character Port: Vintage Character Port is actually premium ruby blended from higher-quality wines of several vintages and matured in wood for about five years. Full-bodied, rich, and ready-to-drink when released, these wines are a good value.
Tawny Port: Tawny is the most versatile Port style. The best tawnies are good-quality wines that fade to a pale garnet or brownish red color during long wood aging. Tawny Ports are appropriate both as apéritifs and after dinner.
Colheita Port: Often confused with Vintage Port because it’s vintage-dated, colheita is actually a tawny from a single vintage. In other words, it has aged (and softened and tawnied) in wood for many years. Unlike an aged tawny, though, it’s the wine of a single year.
Late Bottled Vintage Port (LBV): This type is from a specific vintage, but usually not from a very top year. The wine ages four to six years in wood before bottling and is then ready to drink, unlike Vintage Port. Quite full-bodied, but not as hefty as Vintage Port.
Vintage Port: The pinnacle of Port production, Vintage Port is the wine of a single year blended from several of a house’s best vineyards. It’s bottled at about two years of age, before the wine has much chance to shed its tough tannins. It therefore requires an enormous amount of bottle aging to accomplish the development that didn’t occur in wood. Vintage Port is usually not mature (ready to drink) until about 20 years after the vintage.
Because it’s very rich and very tannic, this wine throws a heavy sediment and must be decanted, preferably several hours before drinking (it needs the aeration). Vintage Port can live 70 or more years in top vintages.
Single Quinta Vintage Port: These are Vintage Ports from a single estate (quinta) that is usually a producer’s best property (such as Taylor’s Vargellas and Graham’s Malvedos). They’re made in good years, but not in the best vintages, because then their grapes are needed for the Vintage Port blend. They have the advantage of being readier to drink than declared Vintage Ports — at less than half their price — and of usually being released when they’re mature. You should decant and aerate them before serving, however.
Treat Vintage Ports like all other fine red wines: Store the bottles on their sides in a cool place. You can store other Ports either on their sides (if they have a cork rather than a plastic-topped cork stopper) or upright. All Ports, except white, ruby, and older Vintage Ports, keep well for a week or so after opening, with aged-stated tawny capable of keeping for a few weeks.

Wine Glossary
American Viticultural Area; AVA
In the United States, a term that defines the geographical boundaries of a specific wine zone or region. For example, Napa Valley is the name of the AVA within Napa County.

Wine Glossary
AOC
An acronym for Appellation d’Origine Contrôlée (the shortened form is Appellation Contrôlée, or AC). AOC is a classification relating to the quality of a wine produced in the European Union (EU).

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AOQS
An acronym for Appellation d’Origine de Qualité Supérieure. AOQS is a classification relating to the quality of a wine produced in the European Union (EU); in this case, refers to a wine of superior quality.

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appellation
In the European Union, a registered place name listed on a wine label that indicates the origin of the wine. Sometimes called appellation of origin.

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aroma
A wine descriptor that refers to how a wine smells.

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balance
A standard that wine experts use to judge wine quality; the relationship of four components (acidity, sweetness, tannin, and alcohol) to each other.

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body
A wine descriptor that explains how heavy a wine feels in your mouth (often related to the alcohol content). Wines are often described as light-bodied, medium-bodied, or full-bodied.

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bouquet
A wine descriptor that refers to how a (typically well-aged) wine smells.

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complexity
A standard that wine experts use to judge wine quality; refers to a characteristic of a wine that has multiple flavors and aromas (usually a better quality wine).

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crisp
A wine descriptor that refers to a wine with refreshing (typically high) acidity.

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decanter
A glass container that can hold the contents of an entire bottle of wine; often used to aerate the wine (let it breathe before consuming).

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depth
A standard that wine experts use to judge wine quality; indicates a wine that gives the impression of having many layers (rather than being "flat" tasting).

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DO
An acronym for Denominação de Origen. DO is Portugal’s highest quality ranking for their wines.

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DOC
An acronym for Denominazione di Origine Controllata. DOC is a classification referring to a quality wine produced in Italy.

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DOCG
An acronym for Denominazione di Origine Controllata e Garantita. DOCG is a classification relating to a small group of elite (high-quality) wines produced in Italy.

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dry
A wine descriptor that refers to a wine that is not sweet. Wines can be classified as dry, off-dry (or semi-sweet), or sweet.

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fermentation
The process (during winemaking) in which yeasts convert the sugars in a grape juice to alcohol and carbon dioxide.

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finish
A wine descriptor that refers to the impression a wine leaves in your mouth after you taste and swallow it (the aftertaste). A standard used to judge wine quality.

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flavor intensity
A wine descriptor that refers to how strong or weak a wine's flavors are.

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fruity
A wine descriptor that refers to a wine that has aromas and flavors that suggest fruit.

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IGT
An acronym for Indicazione di Geografica Tipica. IGT is a table wine classification for Italian wines that list a geographic location on the wine label.

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length
A standard that wine experts use to judge wine quality; indicates a wine that you can taste on the full length of your tongue, rather than just the front of your tongue.

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oaky
A wine descriptor that refers to a wine that has flavors of oak, usually due to storage in oak barrels.

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palate
A term that wine tasters use synonymously for mouth.

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QbA
An acronym for Qualitätswein bestimmter Anbaugebiet. QbA is a classification referring to a quality wine from a special region in Germany.

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QmP
An acronym for Qualitätswein mit Prädikat. QmP is a classification referring to a quality wine with special attributes produced in Germany.

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QWPSR
An acronym for Quality Wine Produced in a Specific Region. QWPSR is a classification referring to quality European wines that have official place names.

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sediment
Refers to solids (tannin and other matter) that develop in some red wines over time.

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soft
A wine descriptor that refers to a wine with a smooth feel in the palate; usually refers to wines with low acidity.

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sommelier
An expert wine specialist who typically assembles a wine list and recommends wines that pair with specific foods.

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tannic
A wine descriptor that refers to a firm, red wine that leaves a dry feel in the palate.

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tannin
A substance in grape skins that contributes to how a red wine tastes.

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terroir
A French word (pronounced ter wahr) that refers to the unique combination of topsoil, climate, altitude, and other natural factors that a particular vineyard or wine region has.

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typicity
A standard that wine experts use to judge wine quality; refers to whether a particular wine is true to its type (for the specific grape variety).

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varietal
A wine that is named after the principal (or sole) grape variety used to produce the wine.

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vintage
The year in which the grapes for a specific wine were grown and harvested.

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VR
An acronym for Vinho Regional. VR indicates a table wine classification for Portuguese wines.