Wine Glossary

The natural tartness or crispness in wine, derived from grapes. Higher acidity makes wine taste fresh and bright; lower acidity produces a rounder, softer mouthfeel. Essential for wine longevity and food pairing.

e.g. Riesling and Champagne are prized for their high natural acidity.

The process of exposing wine to air before drinking. Oxygen softens tannins, opens aromas, and smooths harsh edges. Done by decanting or swirling in the glass.

e.g. A young Barolo typically benefits from 2–3 hours of aeration.

A legally defined and protected wine-producing region. Rules vary by country: France uses AOC, Italy uses DOC/DOCG, Spain uses DO, the US uses AVA, Australia uses GI.

Appellation d'Origine Contrôlée — France's quality classification for wines, cheeses, and other agricultural products. Guarantees wine comes from a specific place, made with approved grape varieties and methods.

e.g. Bordeaux AOC covers the entire Bordeaux wine region.

Appellation d'Origine Protégée — the EU-wide equivalent of AOC, used since 2012. France often uses both terms interchangeably on labels.

American Viticultural Area — the US system for defining wine regions based on geographic and climate boundaries. Unlike AOC, AVA rules don't restrict grape varieties or winemaking methods.

e.g. Napa Valley AVA is the most prestigious in the US.

Storing wine in oak barrels (typically 225–500 litres) to add complexity, texture, and flavour. New oak adds vanilla and toast; used oak contributes less. Duration varies from months to years.

A holistic farming philosophy treating the vineyard as a self-sustaining ecosystem. Follows a lunar calendar for vineyard work, avoids synthetic chemicals, and uses specific herbal preparations. More extreme than organic.

White wine made exclusively from white grapes. In Champagne, this means Chardonnay only — producing the crispest, most mineral styles. Also used for other sparkling wines worldwide.

White or pale sparkling wine made from red-skinned grapes (Pinot Noir and/or Pinot Meunier in Champagne). The juice is extracted quickly to minimise colour extraction.

Spanish term for a winery or wine cellar. Also used for wine shops in Latin America.

Noble rot — a beneficial mould (Botrytis cinerea) that dehydrates grapes on the vine, concentrating sugars and acids for exceptional sweet wines. Sauternes, Tokaj, and German Trockenbeerenauslese depend on it.

e.g. Château d'Yquem in Sauternes is the benchmark for botrytised sweet wine.

The complex aromas that develop in wine through aging, as opposed to fresh fruit aromas from the grape. Earthy, leathery, mushroom, and truffle notes are typical bouquet characteristics.

A yeast (often called Brett) that produces barnyard, leather, and sweaty saddle aromas. Considered a fault in most modern winemaking, but tolerated or valued at low levels in some traditional styles.

Dry sparkling wine with less than 12g/L residual sugar. The most common Champagne style. Brut Nature/Zero Dosage is even drier (0–3g/L).

The world's most planted red grape variety. Produces bold, tannic wines with blackcurrant, cedar, and tobacco notes. Key grape in Bordeaux blends and Napa Valley single-varietals.

Fermentation inside whole intact grapes in a CO₂ atmosphere before crushing. Produces soft, fruity, low-tannin wines with bubblegum and candy aromas. Classic technique for Beaujolais Nouveau.

Spain's traditional method sparkling wine, produced mainly in Catalonia. Uses Macabeo, Xarel·lo, and Parellada grapes. More affordable than Champagne but made by the same method.

French term for grape variety. A cépage assemblage refers to a blend of varieties.

The world's most popular white grape. Naturally neutral — style is shaped by terroir and winemaking. Unoaked: crisp and mineral. Oaked: rich with butter, vanilla, toast. Key grape in Burgundy and Champagne.

French term meaning castle, but in wine it refers to a wine estate — the property, vineyards, and winery. Used almost exclusively in Bordeaux. Does not require a physical château building.

British term for red Bordeaux wine, particularly from the Médoc. Derives from the Old French 'clairet' for a light red wine. Still widely used in British wine culture.

The general weather patterns in a wine region over time. Cool climates (Burgundy, Mosel, Champagne) produce lower alcohol, higher acid wines. Warm climates (Barossa, Napa) yield riper, fuller-bodied wines.

French term for a walled vineyard. In Burgundy, a clos traditionally had physical walls. Today the term is preserved in vineyard names: Clos de Vougeot, Clos du Mesnil.

A tasting term for wines showing multiple layers of aromas and flavours that evolve in the glass and on the palate. A complex wine reveals new elements over time. The opposite is a simple, one-note wine.

French for 'growth' — refers to a specific vineyard or estate and implies quality classification. Premier Cru means first growth in Burgundy but second-tier in Bordeaux. Grand Cru is the top tier in Burgundy and Alsace.

A blend or specific batch of wine. In Champagne, the first and best juice from pressing. For still wines, it often refers to a winemaker's selection or limited release.

Pouring wine from the bottle into a glass vessel to separate sediment and aerate the wine. Old wines need gentle decanting for sediment; young tannic wines benefit from aeration.

Semi-sweet style in Champagne, containing 32–50g/L residual sugar. Pairs well with desserts and fruit-based dishes. Less common than Brut.

Denominación de Origen — Spain's quality wine classification for wines from approved regions made to regulated standards. Similar to France's AOC. DOCa (Denominación de Origen Calificada) is the higher tier, currently only Rioja and Priorat.

Denominazione di Origine Controllata — Italy's quality classification for wines from defined regions with regulated grape varieties and production methods. DOCG (Denominazione di Origine Controllata e Garantita) is the higher tier.

Denominazione di Origine Controllata e Garantita — Italy's highest wine quality tier. Wines are subject to stricter rules than DOC and must pass a tasting panel. Currently 77 Italian DOCGs including Barolo, Barbaresco, Chianti Classico, and Brunello di Montalcino.

French term for a wine estate that owns and farms its own vineyards, as opposed to a négociant who buys grapes or wine. Most common in Burgundy. Domaine de la Romanée-Conti is the most famous example.

The final addition of wine and sugar (liqueur d'expédition) to Champagne and traditional method sparkling wines after disgorgement. Sets the sweetness level — Brut, Extra Brut, Demi-sec, etc.

Wine with little or no perceptible sweetness. In technical terms, dry wine has less than 4g/L residual sugar. Most red wines and many whites are dry.

German ice wine — made from grapes harvested while frozen on the vine, typically at -8°C or colder. Extreme concentration of sugars and acids produces intensely sweet, long-lived wines in tiny quantities.

Buying wine futures — purchasing Bordeaux wine (and increasingly Burgundy and Rhône) before it's bottled. Buyers pay now and receive the bottles 2–3 years later. Risky but often cheaper for sought-after wines.

The process of drawing colour, tannins, and flavour compounds from grape skins during red wine fermentation. More extraction = deeper colour, more tannin, more body. Methods include punch-down and pump-over.

The conversion of grape sugars into alcohol and CO₂ by yeast. Alcoholic fermentation typically takes 1–3 weeks. Wild yeast fermentations are slower and less predictable than cultivated yeast.

The aftertaste of wine — how long the flavours persist after swallowing. A long finish (30+ seconds) is a mark of quality. Great wines finish for a minute or more.

Wine with added neutral grape spirit (brandy) to boost alcohol to 15–22%. Port, Sherry, Madeira, and Marsala are the main styles. Fortification stops fermentation, preserving residual sugar.

A California name for oaked Sauvignon Blanc, popularized by Robert Mondavi. Today sometimes used interchangeably with Sauvignon Blanc.

Geographical Indication — Australia's system for defining wine regions. Less restrictive than European appellations; no rules on grape varieties or winemaking methods. Main GIs include Barossa Valley, McLaren Vale, and Margaret River.

The highest classification in Burgundy and Alsace. In Burgundy, Grand Cru vineyards represent just 1.5% of production. In Bordeaux, 'Grand Cru Classé' has a different meaning and tiering system.

A thin-skinned, sun-loving red grape producing warm, spicy, high-alcohol wines. Core variety in Southern Rhône blends (Châteauneuf-du-Pape) and key in Priorat (as Garnacha) and Rioja blends.

Austria's signature white grape, producing peppery, mineral wines with white pepper notes. Thrives in the Wachau and Kamptal regions. A benchmark food wine.

The annual grape picking season, typically August–October in the Northern Hemisphere and February–April in the Southern Hemisphere. Harvest timing balances sugar ripeness, acid levels, and flavour development.

A tasting of different wines from the same vintage year, usually from different producers or regions. Reveals vintage character and stylistic differences.

Dead yeast cells and grape sediment left in a wine vessel after fermentation. Aging 'sur lie' (on the lees) adds richness, creaminess, and biscuit aromas — a key technique in Burgundy and Champagne.

The process of soaking grape skins in juice or wine to extract colour, tannins, and flavour. Pre-fermentation cold maceration extracts fruit; extended maceration extracts more tannin and structure.

A secondary fermentation where sharp malic acid converts to softer lactic acid, reducing acidity and adding buttery, creamy texture. Standard for most red wines; common for oaked whites like Chardonnay.

The traditional method of making sparkling wine by inducing a secondary fermentation in the bottle. Produces the finest bubbles and most complex sparkling wines. Used in Champagne, Cava, and Crémant.

A soft, plummy red grape producing approachable, medium-bodied wines. Dominant in Pomerol and Saint-Émilion (Bordeaux). Blended with Cabernet Sauvignon worldwide. Pétrus is virtually 100% Merlot.

The specific climate conditions in a small area — a single vineyard, slope, or row. Minor differences in sun exposure, drainage, and frost risk can dramatically change wine character within a single appellation.

A vineyard owned entirely by a single producer. Uncommon in Burgundy where most vineyards are shared. The most famous monopole is Romanée-Conti, owned by Domaine de la Romanée-Conti.

The bubbles in sparkling wine — their size, persistence, and the foam they create. Fine, persistent mousse indicates quality. Caused by CO₂ formed during secondary fermentation.

A dark, tannic Mediterranean grape producing meaty, spicy, aromatic wines. Key in Southern Rhône blends (Châteauneuf-du-Pape) and Bandol. Known as Monastrell in Spain and Mataro in Australia.

An informal category for wines made with minimal intervention: wild yeast only, no additives (including SO₂ or with minimal SO₂), unfined and unfiltered. No legal definition. Ranges from remarkable to faulty.

A merchant who buys grapes, juice, or wine from growers and sells under their own label. Central to Burgundy and Champagne trade. Major négociants include Louis Jadot, Joseph Drouhin, and Louis Roederer.

The aromas of a wine as perceived by smell. The first nose is the initial smell on opening; the second nose after swirling reveals volatilised aromatic compounds.

Wood used for barrels, chips, or staves in winemaking. French oak adds subtle spice and tannin; American oak imparts more pronounced vanilla and coconut. New oak has stronger impact than used oak.

Slightly sweet wine — perceptibly sweeter than dry but not as sweet as a dessert wine. Residual sugar between 4–12g/L. German Spätlese and Vouvray Demi-sec are classic examples.

White wine made with extended skin contact (hours to months), producing amber or orange colour, tannins, and complex oxidative aromas. Traditional in Georgia (qvevri), now made globally.

Viticulture and winemaking without synthetic pesticides, herbicides, or fertilisers. EU Organic certification requires official inspection. Different from biodynamic and natural wine.

The reaction between wine and oxygen. Small amounts of oxidation during aging add complexity; too much produces sherry-like, nutty, flat wine that has 'gone off'. An oxidised fault is called 'maderised'.

The taste and texture sensations perceived in the mouth. The front palate detects sweetness; middle palate shows body and fruit; back palate reveals tannin and acid.

Naturally sparkling wine (also called pét-nat) bottled before fermentation is complete. The remaining sugar ferments in the bottle, creating gentle bubbles. Ancient technique now trendy in natural wine circles.

A microscopic root louse that devastated European vineyards in the late 19th century. Almost all European vines are now grafted onto American rootstocks resistant to phylloxera. A few ungrafted old vines survive in Chile, Australia, and some island regions.

A pink-skinned mutation of Pinot Noir producing full-bodied, spicy whites. In Alsace (as Pinot Gris) it's rich and smoky. In Italy (Pinot Grigio) it's lighter and more neutral. Oregon produces benchmark examples.

The world's most challenging red grape — thin-skinned, early-ripening, prone to disease. At its best produces the most seductive, terroir-expressive reds: silky, complex, perfumed. Burgundy's benchmark grape; also key in Champagne blends.

Second highest classification in Burgundy (below Grand Cru). Dozens of Burgundy vineyards hold Premier Cru status. In Bordeaux, Premier Grand Cru Classé is actually the top tier — the term means something different in each region.

Italy's most popular sparkling wine, from the Veneto region. Made by the Charmat method (secondary fermentation in tanks, not bottles). Lighter, fruitier, and less complex than Champagne. The grape is Glera.

Portuguese term for a wine estate or farm, particularly in the Douro Valley. Quinta do Crasto, Quinta do Vesúvio, and Quinta de la Rosa are famous examples.

The natural grape sugars remaining in wine after fermentation. Dry wines: <4g/L. Off-dry: 4–12g/L. Sweet: 12–45g/L. Dessert wines: 45g/L+. High acidity can mask residual sugar, making a wine taste drier than its sugar level suggests.

Germany's finest white grape, capable of extraordinary range from bone-dry to lusciously sweet. Intense, mineral, high acid wines with pronounced fruit (peach, citrus, petrol with age). Thrives in the Mosel, Rhine, Alsace, and Wachau.

Pink wine made by limited skin contact with red grapes (saignée) or blending of red and white wine (mainly for Champagne rosé). Ranges from pale salmon to deep copper. Provence sets the benchmark for dry rosé.

Italy's most widely planted red grape. The heart of Chianti, Brunello di Montalcino, and Vino Nobile di Montepulciano. High acidity, firm tannins, cherry and dried herb notes. Enormously variable by clone and site.

Aromatic white grape with distinctive grassy, herbaceous, citrus, and gooseberry aromas. Loire Valley (Sancerre, Pouilly-Fumé), New Zealand (Marlborough), and Chile (Casablanca) are benchmarks.

Solid deposits in aged wine — tannin-pigment complexes in reds, tartrate crystals in whites. Natural and harmless. Decanting separates sediment before serving.

The framework of a wine — the interplay of acidity, tannins, alcohol, and sweetness. Well-structured wine has balance between these elements. Structure determines a wine's aging potential.

Informal category for premium Tuscan wines that don't conform to traditional DOC rules — often blending Sangiovese with Cabernet Sauvignon or Merlot, or using 100% international varieties. Sassicaia and Tignanello pioneered the category.

Northern Rhône's great red grape — powerful, spicy, with black olive and smoked meat notes. Called Shiraz in Australia, where it produces richer, more opulent styles. Essential in Côte-Rôtie and Hermitage.

Polyphenols from grape skins, seeds, stems, and oak that create a drying, gripping sensation in the mouth. Essential for red wine structure and longevity. Soften with age. High in Barolo, Bordeaux, and Nebbiolo.

Spain's premier red grape, the foundation of Rioja and Ribera del Duero. Medium body, dark fruit, tobacco, leather notes. Known as Tinto Fino in Ribera, Tinto de Toro in Toro, and Aragonez in Portugal.

The complete natural environment of a vineyard — soil, climate, topography, and all other factors that give a wine its sense of place. The concept that where grapes grow fundamentally shapes what they taste like. Central to French wine philosophy.

French concept meaning typicity — how well a wine expresses the characteristics of its grape variety, region, and vintage. A wine with good typicité tastes 'true to type'.

Wine made primarily from a single grape variety, labeled with that variety's name. New World wines are typically varietal (Napa Cabernet, NZ Sauvignon Blanc). Old World wines are usually named after their appellation.

The onset of grape ripening — when berries soften, begin to colour, and start accumulating sugar. Typically late summer. After veraison, growers monitor ripeness for harvest timing.

A tasting of the same wine from multiple consecutive vintages, revealing how a wine evolves with age and how vintages compare.

The complete process of making wine — from harvest through fermentation, aging, and bottling. Winemakers' vinification decisions profoundly affect final wine style.

The year the grapes were harvested. Vintage matters most in cool, variable climates (Burgundy, Champagne, Bordeaux) where weather dramatically affects quality. Less important in consistent warm climates.

Acidity from acetic acid (vinegar) and ethyl acetate in wine. Small amounts add complexity; detectable amounts are a fault, smelling like nail polish remover or vinegar. Often abbreviated VA.

German and Austrian term for a wine estate — a winery that grows its own grapes. Equivalent to domaine in French.

Fermenting grapes without destemming, leaving grape stems intact. Adds structure, spice, and savouriness. Common in Burgundy and the Northern Rhône. Risky if stems are unripe.

Microorganisms that convert grape sugar into alcohol during fermentation. Wild/ambient yeast from the vineyard produces complex, unpredictable wines. Cultivated commercial yeast is reliable but can suppress terroir expression.

California's adopted grape variety, genetically identical to Italy's Primitivo and Croatia's Tribidrag. Produces bold, jammy, high-alcohol reds and the famous White Zinfandel rosé. Thrives in Lodi and Sonoma.