The Most Popular Red Grape Varieties
The most popular red grape varieties today are Cabernet Sauvignon, Merlot, Pinot Noir, Syrah/Shiraz, and Zinfandel. You’ll encounter these grapes in varietal wines and place-name wines. These red grape varieties can also be blending partners for other grapes, in wines made from multiple grape varieties.
Cabernet Sauvignon
Cabernet Sauvignon is a noble grape variety that grows well in just about any climate that isn’t very cool. It became famous through the red wines of the Médoc district of Bordeaux. Today, California is an equally important region for Cabernet Sauvignon — not to mention Washington state, southern France, Italy, Australia, South Africa, Chile, and Argentina.
The Cabernet Sauvignon grape makes wines that are high in tannin and are medium- to full-bodied. The descriptor for Cabernet Sauvignon’s aroma and flavor is blackcurrants or cassis; the grape can also contribute vegetal tones to a wine when or where the grapes are less than ideally ripe.
Because Cabernet Sauvignon is fairly tannic (and because of the blending precedent in Bordeaux), winemakers often blend it with other grapes; usually Merlot — being less tannic — is considered an ideal partner. Australian winemakers blend Cabernet Sauvignon with Syrah.
Cabernet Sauvignon often goes by just its first name, Cabernet (although it isn’t the only Cabernet) or even by its nickname, Cab.
Merlot
Deep color, full body, high alcohol, and low tannin are the characteristics of wines made from the Merlot grape. The aromas and flavors can be plummy or sometimes chocolatey, or they can suggest tea leaves.
Some wine drinkers find Merlot easier to like than Cabernet Sauvignon because it’s less tannic. Other winemakers feel that Merlot isn’t satisfactory in its own right, and thus often blend it with Cabernet Sauvignon, Cabernet Franc, or both. Merlot makes both inexpensive, simple wines and, when grown in the right conditions, very serious wines.
Merlot is actually the most-planted grape variety in Bordeaux, where it excels in the Right Bank districts of Pomerol and St. Emilion. Merlot is also important in Washington state, California, the Long Island district of New York, Northeastern Italy, and Chile.
Pinot Noir
The Pinot Noir grape variety is finicky, troublesome, enigmatic, and challenging. But a great Pinot Noir can be one of the greatest wines ever. The prototype for Pinot Noir wine is red Burgundy, from France, where tiny vineyard plots yield rare treasures of wine made entirely from Pinot Noir. Oregon, California, New Zealand, and parts of Australia and Chile also produce good Pinot Noir. Pinot Noir’s production is limited, because this variety is very particular about climate and soil.
Pinot Noir wine is lighter in color than Cabernet or Merlot. It has relatively high alcohol, medium-to-high acidity, and medium-to-low tannin (although oak barrels can contribute additional tannin to the wine). Its flavors and aromas can be very fruity or earthy and woodsy, depending on how it is grown and/or vinified. Pinot Noir is rarely blended with other grapes.
Syrah/Shiraz
The northern part of France’s Rhône Valley is the classic home for great wines from the Syrah grape. Rhône wines such as Hermitage and Côte-Rôtie are the inspiration for Syrah’s dissemination to Australia, California, Washington state, Italy, and Spain.
Syrah produces deeply colored wines with full body, firm tannin, and aromas/flavors that can suggest berries, smoked meat, black pepper, tar, or even burnt rubber (believe it or not). In Australia, Syrah (called Shiraz) comes in several styles — some of them charming, medium-bodied, vibrantly fruity wines that are quite the opposite of the Northern Rhône’s powerful Syrahs.
Syrah doesn’t require any other grape to complement its flavors, although in Australia it is often blended with Cabernet, and in the Southern Rhône it is often part of a blended wine with Grenache and other varieties.
Zinfandel
Zinfandel is one of the oldest grapes in California, and it therefore enjoys a certain stature there. For decades, wine authorities were uncertain of its origins. They have finally proven that Zinfandel’s origin is an obscure Croatian grape.
Zin — as lovers of Zinfandel call it — makes rich, dark wines that are high in alcohol and medium to high in tannin. They can have a blackberry or raspberry aroma and flavor, a spicy or tarry character, or even a jammy flavor. Some Zins are lighter than others and meant to be enjoyed young, and some are serious wines with a tannin structure that’s built for aging.
White Zinfandel is such a popular wine — and so much better known than the red style of Zinfandel — that its fans might argue that Zinfandel is a white grape. But it’s really red.

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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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.