Extra virgin olive oil (EVOO) is the highest grade of olive oil you can buy. It comes from the first milling of fresh olives, pressed at a maximum temperature of 80.6°F (27°C), with no chemicals involved. To earn the extra virgin label, the oil must also pass strict chemical tests and a sensory panel. Only then is it extra virgin.
As third-generation olive farmers and certified olive oil sommeliers, we produce EXAU exclusively to extra virgin standards. In this guide, we cover everything you need to know about what makes an oil extra virgin, how grading works, and what separates a great EVOO from an ordinary one.
Olive Oil Grades: What They Mean
There are three main grades of olive oil: ordinary (also called refined), virgin, and extra virgin. Extra virgin is the best. It has the most flavor, the most health benefits, and the most stability for cooking and finishing.
The grade tells you how the oil was made and whether it was chemically processed. Extra virgin olive oil is never refined. It goes from fruit to bottle through mechanical means only. See our side-by-side comparison of regular olive oil vs. extra virgin olive oil.
Refined olive oil is a different product entirely. It is chemically processed to remove defects, which also strips flavor, aroma, and most of the polyphenols. Learn what refined olive oil actually is — and why it shows up on grocery shelves labeled as "pure" or "light."
The Technical Standards: EVOO by the Numbers
To be legally classified as Extra Virgin, an oil must meet strict chemical and sensory parameters set by the International Olive Council (IOC). These numbers and flavor markers act as a "lie detector test," proving the fruit was healthy and the processing was clean.
| Standard | Extra Virgin Limit (IOC) | Why It Matters |
|---|---|---|
| Free Fatty Acid (FFA) | ≤ 0.8% | Measures fruit damage; lower is fresher. |
| Peroxide Value | ≤ 20 mEq O2/kg | Measures oxidation/exposure to air. |
| UV Absorbency (K270) | ≤ 0.22 | Detects if the oil was refined or heated. |
| Median of Defects | Exact 0 | Must be free of rot, fermentation, or mold. |
| Positive Attributes | Median > 0 | Must have detectable fruitiness, bitterness, or pungency. |
| Flavor Profile | Aromatic, Bitter, Spicy, Pungent, Herbaceous | These indicate high polyphenol counts and healthy fruit. |
What Makes an Olive Oil "Extra Virgin"?
To qualify as extra virgin, an oil must meet all of the following requirements. Each one matters.
The Fruit Must Be Picked From the Tree
Olives used for EVOO must come directly from the tree. Fruit that falls to the ground cannot be used. When olives fall, they bruise and pick up soil contaminants. Both of these raise the free fatty acid level of the oil, which causes it to fail extra virgin status.
Careful harvesting is one of the most important steps in making a great oil. At EXAU, we harvest by hand and with small mechanical tools. We protect the fruit from the moment it leaves the tree.
The Olives Must Be Milled Quickly
After harvest, olives need to reach the mill fast. Most producers consider 24 hours acceptable. Premium producers like EXAU aim to mill within 8 hours. The shorter the window, the better the oil.
Temperature control at the mill matters just as much. If the olive paste gets too hot during crushing, quality drops and the oil may no longer qualify as extra virgin. See our complete step-by-step guide to how EVOO is made.
Free Fatty Acid (FFA) Must Be Below 0.8%
The International Olive Council (IOC) requires extra virgin olive oil to have a free fatty acid level below 0.8%. FFA is one of the most important quality signals in the industry. A high FFA usually means something went wrong: the tree was stressed, the fruit was damaged, or the harvest was delayed too long.
The best oils are well under 0.8%. Read our full explanation of olive oil acidity and what FFA actually measures.
Peroxide Level Must Be Below 20
Peroxide level measures how much the oil has oxidized. When olive oil meets air, it starts to degrade. A high peroxide level means the oil will go rancid faster. The IOC sets the maximum for extra virgin olive oil at 20.
Limiting air contact during production, storage, and bottling is critical. Once you open a bottle, use it within a few weeks for best quality. See our full guide to storing extra virgin olive oil properly.
It Must Pass a Sensory (Organoleptic) Test
Lab results alone are not enough. Every extra virgin olive oil must also pass a sensory evaluation. A trained panel tastes and judges the oil for aroma, flavor, and finish. Common defects include rancidity, mustiness, and fermented notes — usually caused by poor fruit storage, mill problems, or unhealthy olives at harvest. Even if an oil passes every chemical test, one sensory defect disqualifies it.
Learn how to do an olive oil tasting at home using the same approach as professionals.
First Cold Pressed: What That Label Actually Means
You will see "first cold pressed" on many EVOO bottles. It sounds meaningful. In practice, it describes a standard that every genuine extra virgin olive oil already meets.
"First" refers to the initial pressing of the fruit. "Cold" means the oil was extracted below 27°C (80.6°F). Both of these are requirements built into the extra virgin standard itself. So the phrase is redundant on any real EVOO.
It is worth knowing because it comes up constantly in marketing. Read our full breakdown of what first cold pressed really means — and why it does not tell you as much as producers want you to think.
Filtered vs. Unfiltered Olive Oil
After milling, the oil can be bottled as-is (unfiltered) or passed through a filter to remove sediment and olive particles. Both can be extra virgin. Both have trade-offs.
Unfiltered olive oil has a cloudy appearance and a fresher, herbaceous flavor in the short term. Filtered oil is cleaner, more stable, and has a longer shelf life. Neither is inherently better. It comes down to how you use it and how quickly you go through a bottle. See our full comparison of filtered vs. unfiltered olive oil.
Who Sets the Standards for Extra Virgin Olive Oil?
Standards vary by country and certifying body. The differences are small but they matter to producers.
The International Olive Council (IOC)
The IOC was founded in Madrid, Spain in 1959. It sets the most widely recognized international standards for olive oil grades. All IOC standards are publicly available and free. At EXAU, we follow IOC standards because our oil is produced entirely in Calabria, Italy.
COOC, NAOOA, and the FDA
In California, the California Olive Oil Council (COOC) requires FFA below 0.5% — stricter than the IOC's 0.8%. The North American Olive Oil Association (NAOOA) has its own standards too. The FDA oversees imported foods but does not define or enforce olive oil grades. This is why the industry is largely self-regulated, and why it is so easy for misleading labels to spread.
What to Look For When Buying Extra Virgin Olive Oil
The label tells you a lot if you know what to look for. Here are the signals that actually matter.
Harvest Date
A harvest date is the most important thing on a bottle. It tells you when the olives were picked. Olive oil does not improve with age. The fresher the oil, the better the flavor and the higher the polyphenol content. A "best by" date without a harvest date is a red flag. See our full producer's guide to buying great olive oil.
Region of Origin
Single-origin oils are traceable. You know where the olives grew, which tells you something about the climate, the cultivar, and the flavor profile. Blended oils — common on grocery shelves — can pull from multiple countries and multiple harvests. The result is often flat, inconsistent, and old by the time it reaches you.
Polyphenol Content
Polyphenols are the antioxidant compounds in extra virgin olive oil responsible for its bitterness, pungency, and most of its health benefits. The more polyphenols in an oil, the more nutritionally significant it is. Research from the NIH confirms that these compounds, such as oleocanthal, contribute to the oil's anti-inflammatory properties. Polyphenol content drops with age, heat, and poor storage. Read our guide to polyphenol-rich olive oil and what the research says.
Watch for Fraud
Olive oil fraud is a real and ongoing problem in the industry. Some producers blend genuine oil with cheaper seed oils, then chemically correct the result to pass testing. Others blend old oil with new to stretch supply without disclosing it. Knowing what to look for is your best defense. Read our guide on how to spot fake olive oil.
Can You Cook With Extra Virgin Olive Oil?
Yes. The myth that EVOO is not safe for cooking is not supported by the science. Extra virgin olive oil handles everyday cooking temperatures well. Clinical studies published in JACC show that replacing processed fats with olive oil supports cardiovascular health. Its polyphenols and antioxidants actually make it more stable than many refined oils under heat. Read the truth about olive oil smoke point and what the research actually shows.
Frequently Asked Questions About Extra Virgin Olive Oil
What does extra virgin mean exactly?
Extra virgin is the top grade of olive oil. The oil must come from the first milling of fresh olives, made without heat above 27°C or chemicals. FFA must be below 0.8%, peroxide below 20, and the oil must pass a sensory panel with no defects.
Is extra virgin olive oil the same as cold pressed?
Almost. All genuine EVOO is produced below 27°C — that is what "cold pressed" means. But extra virgin also requires passing chemical and sensory tests. Cold pressed alone does not guarantee that. Read more about what first cold pressed really means.
How do I know if an extra virgin olive oil is real?
Look for a harvest date on the label. Look for a named region of origin. Look for a producer who shares lab results. If a bottle only shows a "best by" date, treat that as a warning sign. See our full buying guide here.
Does extra virgin olive oil go bad?
Yes. Consume EVOO within 24 months of the harvest date. Once opened, use it within a few weeks. Store it away from heat, light, and air. See our full guide to olive oil storage.
What is the difference between extra virgin and refined olive oil?
Extra virgin is unrefined — it goes from fruit to bottle mechanically, with no chemical processing. Refined olive oil is chemically treated to correct defects, which strips away most of the flavor and health benefits. The "pure" and "light" olive oils you see at the grocery store are refined. Learn more about what refined olive oil actually is.
Why We Only Produce Extra Virgin Olive Oil
Our family has farmed olives in Calabria, Italy since 1927. Giuseppe and Skyler took over the family groves in 2017 with a single goal: restore the land and produce the best oil possible. Every bottle of EXAU is lab-tested, harvest-dated, and made to IOC extra virgin standards. We work exclusively with organically managed farms and farm regeneratively. We believe the best olive oil comes from producers who care for the land, not just the yield.
Shop our 100% Calabrian extra virgin olive oil — single origin, harvest-dated, and family farmed since 1927.
We wrote a book called The Olive Oil Enthusiast. Order your copy today.
You may also like:
How Extra Virgin Olive Oil Is Made
What Does First Cold Pressed Actually Mean?
Regular Olive Oil vs. Extra Virgin: What's the Difference?
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