What is extra virgin olive oil? — Grades, acidity, and how to recognize quality

It's on every olive oil label—sometimes large, sometimes small: extra virgin olive oil, Italian olio extra vergine di oliva, English extra virgin olive oil. This designation is the highest quality grade an olive oil can carry in the European Union. We explain what it specifically means—and how to recognize a good extra virgin olive oil—here.

An overview of EU quality grades for olive oil

The EU divides olive oil into four classes, ordered from highest to lowest quality:

• Extra virgin olive oil (extra vergine) — the top class. Obtained exclusively mechanically from olives, without heat or chemical treatment. Organoleptically flawless, with distinct fruitiness. Acidity below 0.8%.
• Virgin olive oil (vergine) — also mechanically obtained, but with slight organoleptic deviations. Acidity below 2%.
• Refined olive oil — defective virgin oil that has been purified using chemical or physical processes. Flavor and odor neutral.
• Lampante — inedible oil that may only be placed on the market after refining.

What is simply called "olive oil" in the supermarket is usually a blend of refined and virgin olive oil—not extra virgin olive oil. Those looking for character and aromatic diversity should opt for the top class.

What "extra virgin" specifically means

An olive oil must meet three requirements to be sold as "extra virgin":

• Mechanical extraction — pressing or centrifugation from the olive paste, without solvents and without heating above 27 °C.
• Acidity below 0.8% — measured as free oleic acid. A low acidity indicates that the olives were healthy and processed quickly.
• Sensory evaluation — an official tasting panel must confirm that the oil tastes fruity and has no defects (e.g., rancid, moldy, winey).

Only when all three tests have been passed may the term appear on the label.

How to recognize a good extra virgin olive oil

The EU classification is the minimum hurdle—it says nothing about the quality within the class. High-quality oils can be recognized by the following characteristics:

• Clear origin. "Olive oil from Italy" is not enough—a good oil specifies the region (Apulia, Liguria, Tuscany, Sicily), ideally also the olive variety.
• Variety specification. Single-variety pressed oils (Coratina, Picual, Taggiasca, Tonda Iblea) show the character of a single olive in its purest form.
• Harvest year or best before date. Olive oil is a fresh product—young oils are more aromatic than old ones. The harvest year (Annata) belongs on every reputable label.
• Dark glass or opaque packaging. Light oxidizes olive oil—bottling in clear glass bottles entails a risk. Premium producers use dark green, brown glass, or ceramic.
• Taste with character. A good oil is not taste-neutral. It should taste fruity, sometimes grassy, sometimes peppery—the famous scratch in the throat is a quality characteristic, not a defect.

DOP, IGP and the topic of origin protection

Beyond the EU quality grades, there are additional origin seals that impose even stricter requirements:

• DOP (Denominazione di Origine Protetta) — cultivation, processing, and bottling must take place entirely within the defined area of origin, and only approved olive varieties may be used. Examples: Riviera Ligure DOP (Olio Calvi, Olio Roi), Monti Iblei DOP (Frantoi Cutrera, Sicily), Garda DOP (Madonna delle Vittorie).
• IGP (Indicazione Geografica Protetta) — somewhat less strict than DOP; at least one stage of production must take place in the area of origin.

Both seals are an additional promise of quality. They do not automatically make an oil better, but they give you the assurance that the statement of origin is correct—which is not a given in the olive oil market.

The taste: what distinguishes extra virgin olive oil

Three sensory characteristics are considered positive attributes of a good extra virgin olive oil:

• Fruity (fruttato) — the impression of ripe or green olives, often accompanied by aromas of fresh herbs, ripe tomatoes, almonds, or green apples.
• Bitter (amaro) — a pleasant bitter note, typical of oils from early harvested, still green olives.
• Pungent (piccante) — the famous "scratch in the throat" effect, a slight burning sensation when swallowed. This is caused by polyphenols and is a sign of a young, expressive oil.

If an oil shows nothing of this—taste-neutral, without bitterness, without pungency—it is either adulterated, mixed with refined oil, or already rancid.

Which extra virgin olive oil for which purpose?

Within the top class, there are enormous taste differences—from distinctly spicy to almost sweetly mild. A few recommendations from our assortment:

• Spicy and robust — Apulian Coratina oils like Muraglia in the ceramic bottle or Olio Crudo from Olearia Schiralli; Spanish Picual like OMED Picual or the DOP lines from Castillo de Canena.
• Mild and elegant — Ligurian Taggiasca oils like Olio Roi Mosto Roi or Calvi Mosto Oro; Spanish Arbequina like Azada.
• Single-variety DOP — Sicilian Tonda Iblea from Frantoi Cutrera with Monti Iblei DOP, or Ligurian DOP oils from Olio Calvi.
• Organic with character — the Portuguese Algarve oils from Monterosa or the Day/Night line from Nobleza del Sur.

Frequently Asked Questions

What is the difference between "virgin" and "extra virgin"?

Both classes are mechanically extracted, without chemical processing. "Extra virgin" has lower acidity (below 0.8% instead of 2%) and must be organoleptically flawless. "Virgin" without "extra" shows slight sensory deviations—mostly found in the supermarket segment.

What does "cold pressed" mean?

"Cold pressed" or "cold extracted" means that the olive paste is not heated above 27 °C during processing. This is an EU requirement for "extra virgin olive oil"—most good oils already meet this. The term alone therefore says little about premium quality, but it is a minimum criterion.

Is higher acidity bad?

A higher acidity indicates less healthy olives or delayed processing—both lead to a loss of quality. Premium oils are often significantly below the EU guideline of 0.8% (e.g., 0.2–0.4%). Note: Acidity has nothing to do with taste—a "pungent" oil in the mouth is not "sourer"; it contains more polyphenols.

Which olive variety has the best quality?

There is no "best" variety—each has its own character. Coratina is Apulia's robust classic, Taggiasca is Liguria's mild elegance, Picual is Andalusia's spicy all-rounder, Tonda Iblea is Sicily's intense aromatic complex. Which variety suits you depends on what you cook with it—and your taste preferences.

How do I taste olive oil correctly?

Classic tasting: put a few drops into a small cup, warm it with your hand, smell it at the rim of the glass, then take a sip and draw air through your teeth. This spreads the aroma in your mouth. Pay attention to the three characteristics: fruity, bitter, pungent. A good oil shows all three in a balanced ratio.

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