Wine and the Law

PDO, Protected Designation of Origin

The highest level of EU wine classification. A PDO wine must come from a specific, defined geographic area and be made according to strict rules that are set out in the region's cahier des charges (specification document). These rules typically control:

• Geographic boundaries: exactly which vineyards are included
• Permitted grape varieties: only certain grapes can be used
• Maximum yields: limiting how much wine can be produced per hectare
• Minimum alcohol levels: ensuring sufficient ripeness
• Winemaking practices: what is and isn't allowed (e.g., chaptalization, irrigation, oak use)
• Ageing requirements: minimum time in barrel and/or bottle before release
• Tasting panel approval: in many regions, wines must pass a tasting panel to receive PDO status

The idea: PDO wines are supposed to express the character of their specific place of origin (terroir). The regulations are designed to ensure that wines labelled with a specific place name are authentic and typical of that place.

PGI, Protected Geographical Indication

A less restrictive classification than PDO. PGI wines must come from a broader geographic area and follow fewer rules. Winemakers have more freedom in terms of grape varieties, yields, and winemaking techniques.

The trade-off: PGI wines have less geographic prestige than PDO wines, but winemakers have more creative freedom. Some producers deliberately choose PGI (or even the lowest category) because the PDO rules for their region don't allow them to make the style of wine they want.

Famous example: The "Super Tuscan" wines of Italy. Producers in Tuscany wanted to use Cabernet Sauvignon and Merlot (not permitted under the Chianti DOCG rules), so they labelled their wines as IGT (the Italian PGI term) instead. Despite being technically "lower" in classification, these wines became some of Italy's most expensive and acclaimed.

Wine Without a Geographical Indication

The least regulated category. These wines can come from anywhere within the producing country and have minimal production rules. They can, however, state the grape variety and vintage on the label (which was not always allowed historically). This is the category for basic, everyday table wines.

Geography

The boundaries of the production area are precisely defined, sometimes down to specific vineyards or even specific plots within vineyards (as in Burgundy's Grand Cru system). Grapes must be grown within these boundaries. In most cases, the wine must also be produced (vinified and bottled) within the defined area, though there are exceptions.

Grape Varieties

Most PDO regulations specify which grape varieties are permitted. This is a major reason why specific regions are associated with specific grapes: Burgundy (Chardonnay and Pinot Noir), Barolo (Nebbiolo), Riesling in the Mosel, Tempranillo in Rioja.

Some regions are more restrictive than others. Bordeaux permits several varieties for blending; Burgundy typically permits only one (Chardonnay for whites, Pinot Noir for reds). Some regulations are extremely prescriptive, specifying not just the grape variety but the minimum percentage of each variety in the blend.

Yields

Maximum yields are set to prevent overproduction, which can dilute quality. More prestigious appellations typically have lower yield limits. For example, generic AC Bordeaux allows significantly higher yields than a commune appellation like Pauillac, which in turn allows higher yields than Burgundy Grand Cru.

In exceptional vintages, yields may be slightly adjusted upward (through a mechanism called PLC in France), and in poor vintages, actual yields may fall well below the maximum. The limit is a ceiling, not a target.

Winemaking Practices

Regulations may dictate:

• Whether chaptalization (adding sugar before fermentation to raise potential alcohol) is permitted. Generally allowed in cooler regions (Burgundy, Germany), prohibited in warmer ones (southern France, Spain, Italy south of a certain latitude).
• Whether irrigation is permitted. Traditionally banned in most European PDO regions (based on the philosophy that vines should express natural terroir without artificial water), though this is increasingly relaxed due to climate change.
• Whether certain winemaking techniques are allowed or prohibited (e.g., oak chips, concentration techniques, specific fining agents).

Ageing Requirements

Many PDO wines have mandatory minimum ageing periods before they can be released for sale. These requirements are meant to ensure the wine has reached an appropriate level of maturity. Examples:

European (Old World) Labels

European labels typically emphasise place over grape. The key elements are:

• Region / appellation name: the most prominent information. Tells you where the wine is from, which (if you know the rules) tells you the grape variety, style, and quality expectations.
• Classification level: PDO terms like AOC, DOC, DOCG, DO (or the EU-wide PDO/PGI terms)
• Producer name: château, domaine, estate, or brand name
• Vintage: the year the grapes were harvested
• Quality tier: terms like Riserva, Gran Reserva, Premier Cru, Grand Cru, Kabinett, Spätlese, etc.
• Alcohol level: required on all labels
• Volume: typically 750ml for standard bottles
• Country of origin
• Allergen warnings: "contains sulphites" is mandatory in the EU and most export markets

Note: grape variety is optional on most European PDO labels. Many regions do not include it.

New World Labels

New World labels (from countries like the US, Australia, New Zealand, Chile, Argentina, South Africa) typically emphasise grape variety over place. The key elements are:

• Grape variety: usually the most prominent information. "Chardonnay," "Pinot Noir," "Malbec."
• Brand / producer name: often the primary identifier
• Region: may range from very broad (e.g., "South Eastern Australia") to very specific (e.g., "Rutherford, Napa Valley")
• Vintage
• Alcohol level
• Country of origin

New World labels tend to be more consumer-friendly for wine beginners, since the grape variety is clearly stated. The trade-off is that they give less information about the specific character of the wine's origin.

The Terroir Approach (European Tradition)

Wine should express the unique character of the place where it was grown. The best wines are those that most faithfully reflect their specific vineyard, soil, climate, and local traditions. Regulations exist to ensure that wines labelled with a place name genuinely represent that place.

Implications: Strict rules about grape varieties, yields, and winemaking. Vintage variation is accepted and even celebrated, it is part of the expression of place. The winemaker's role is to translate terroir into the glass, not to impose a personal style.

The Brand Approach (New World Tendency)

Wine should deliver a consistent, reliable product that meets consumer expectations. The brand promise matters more than vintage variation or site-specific character. Winemakers have the freedom to use whatever techniques and materials produce the best wine, regardless of tradition.

Implications: Fewer restrictions on grape varieties and winemaking. Blending across regions is common (e.g., "South Eastern Australia" wines that blend grapes from multiple states). Consistency from year to year is a goal, not a compromise.

United States: The AVA System

The US uses American Viticultural Areas (AVAs) to define wine regions. An AVA is a designated grape-growing region distinguished by geographic features (climate, soil, elevation, physical features). Important differences from the EU system:

• AVAs define geographic boundaries only: they do not regulate grape varieties, yields, winemaking practices, or ageing requirements
• If an AVA is named on the label, at least 85% of the grapes must come from that AVA
• If a state is named (e.g., "California"), at least 100% of the grapes must come from that state
• If a county is named, at least 75% of the grapes must come from that county

Key point for the exam: The AVA system is much less restrictive than the EU PDO system. A Napa Valley AVA wine can be made from any grape variety using any winemaking method. The only guarantee is that the grapes came from within Napa Valley's boundaries.

Major AVAs to know: Napa Valley, Sonoma County (and sub-AVAs like Russian River Valley), Willamette Valley (Oregon), Walla Walla Valley (Washington State), Paso Robles, Santa Barbara County.

Australia: The GI System

Australia uses Geographical Indications (GIs) organised in a hierarchy:

• State / Zone: the broadest level (e.g., "South Eastern Australia," which covers NSW, Victoria, Tasmania, and South Australia, the vast majority of Australian wine)
• Region: a defined wine region within a zone (e.g., Barossa Valley, McLaren Vale, Margaret River)
• Sub-region: a defined area within a region (e.g., Eden Valley within the Barossa zone)

If a GI is named on the label, at least 85% of the grapes must come from that GI. Like AVAs, Australian GIs do not regulate grape varieties or winemaking practices.

Label Integrity Program (LIP): Australia's compliance system that audits vintage, variety, and geographic claims on labels. It ensures accuracy but does not set quality standards.

Other New World Countries

• New Zealand: uses GIs similar to Australia. Marlborough, Hawke's Bay, Central Otago are key regions. Minimum 85% from the stated GI.
• Chile: uses a Denomination of Origin (DO) system that defines regions but is less restrictive than European PDO. Key regions: Maipo Valley, Colchagua, Casablanca, Leyda. Minimum 75% of the stated variety.
• Argentina: uses Geographical Indications. Mendoza is by far the dominant region. Sub-regions like Lujan de Cuyo and the Uco Valley are increasingly important. Minimum 85% of stated variety.
• South Africa: uses the Wine of Origin (WO) system. Regions are defined (Stellenbosch, Paarl, Swartland, Walker Bay, etc.) with a minimum 85% requirement for variety, vintage, and geographic claims.

France: Cru Classifications

• Burgundy: Grand Cru (the top vineyards, about 1% of production) → Premier Cru (the next tier, excellent vineyards) → Village wines → Regional wines (Bourgogne). This is a hierarchy of vineyard quality.
• Bordeaux: The 1855 Classification (First Growth to Fifth Growth), the Saint-Émilion Classification, and Cru Bourgeois. These are hierarchies of estate quality.
• Alsace: Grand Cru vineyards (51 named sites) with stricter rules than regular Alsace AOC.
• Beaujolais: Cru Beaujolais (10 named villages like Morgon, Fleurie, Moulin-à-Vent) represent the top tier.

Italy: DOCG vs DOC

DOCG is a higher tier than DOC, with stricter rules and mandatory government tasting panels. Not all great Italian wines carry DOCG status (some producers deliberately work outside the system), but DOCG signals that the region has met stringent quality standards.

Spain: Ageing Terms

Spain uses a system of ageing classifications within its DO/DOCa system:

Germany: Prädikat Levels

German Prädikatswein is classified by the ripeness level of the grapes at harvest, not by ageing or vineyard prestige: