The phrase "fake olive oil" gets thrown around a lot. It has caused real confusion, real anxiety, and a lot of bad advice on the internet.
As producers and certified sommeliers, we believe it’s time to stop the fear-mongering and start looking at the facts. In this post, we explain what "fake" olive oil actually means, how to spot it, and why the famous "70% is fake" claim is a misleading marketing tactic that doesn't tell the whole story. Here is the truth from our family groves in Calabria.
What Is Fake Olive Oil?
Fake olive oil is oil that does not meet the chemical and sensory requirements for the grade it claims to be on the label.
In the industry, we distinguish between two problems:
- Mislabeled Oil: This is 100% olive oil, but it isn't "Extra Virgin." It might be old, rancid, or made from poor-quality fruit. Chemically, its Free Fatty Acid (FFA) might be above the 0.8% limit.
- Adulterated Oil: This is the true "fake." This occurs when olive oil is blended with a different type of oil—like sunflower, canola, or hazelnut—and sold as 100% olive oil.
Both are unacceptable, but they are different issues. Most "fraud" reported in the news is actually mislabeling (oil losing its quality on a shelf) rather than chemical adulteration.
How to Tell if Olive Oil Is Fake
The only reliable way to confirm an oil is fake is through professional lab testing and sensory panel evaluation. There is no "kitchen hack" for chemistry. Brands and producers are responsible for ensuring their products meet quality standards; it is not the consumer's job to verify this. However, you can use your palate as a guide.
Do a Professional Tasting at Home
A home tasting won't give you a lab report, but it will train your brain to recognize quality. Set out a small cup, warm the bottom with your hand to release the aromas, and smell deeply. High-quality EVOO should smell like something familiar and pleasant: fresh herbs, green tomato, or arugula. Learn our full professional tasting technique here.
What Does Fake or Defective Oil Taste Like?
Low-quality or mislabeled oil often has off-putting characteristics. Common defects include a cheesy, "fusty" smell (like old sweaty socks), or a "winey" smell (like vinegar). Some describe it as flat, waxy, or tasting like crayons. In general, if it smells like something you recognize but would not want to eat, it’s a red flag.
The Freezer Test: What Does Not Work
You may have heard that putting olive oil in the freezer and seeing if it solidifies is a test for authenticity. This is false. All fats will eventually solidify at cold temperatures. The rate at which olive oil solidifies depends on its specific fatty acid composition (the variety of olives used), not whether it is "real" or "fake." This test tells you nothing and can damage the oil's flavor. Do not do it. Read more about why olive oil freezes.
How to Avoid Fake Olive Oil
The best protection is transparency. Small producers who grow, mill, and bottle their own oil are the safest bet because there is no middleman to introduce uncertainty. Here is your shopping checklist:
- A Harvest Date: Not a "Best By" date. A harvest date tells you exactly when the fruit was picked. Consume EVOO within 24 months of that date.
- A Named Region of Origin: "Product of Italy" is a bottling claim. Look for a specific region like Calabria, Italy.
- A Real Producer: Look the brand up. Do they own groves? Are they transparent about their process?
Is 70% of Olive Oil in the U.S. Fake?
No. This claim is outdated and statistically misleading. It has been repeated for over 15 years as a marketing tactic, but it was never a national reality.
The Truth Behind the UC Davis Study
In 2010, a UC Davis study found that 69% of "imported" oils sampled in California retail outlets failed to meet the sensory standards for Extra Virgin. However, the study had significant flaws: it was limited to California, it was not peer-reviewed at the time of the headlines, and it was funded by groups with a financial interest in promoting domestic California oil over imports.
The FDA’s Peer-Reviewed Findings
When the public concern reached a tipping point, the FDA conducted its own independent, peer-reviewed study. Their researchers found a very low occurrence rate of adulteration—less than 5%—in products labeled as Extra Virgin. While mislabeling (oil being old or losing grade) remains a challenge, the idea that most oil is "fake" is fear-mongering. You can read the FDA authenticity study here.
The Bottom Line
Shopping for olive oil should be an enjoyable experience, not an exercise in paranoia. We produce single-origin, regeneratievly farmed extra virgin olive oil from our family groves that have been in production since 1927. Trust the producer, check the harvest date, and let your palate be the final judge!
Shop our 100% Italian extra virgin olive oil, family-farmed and harvest-dated for total transparency.
Master the art of quality with our book, The Olive Oil Enthusiast.
You may also like:
What Is Extra Virgin Olive Oil? The Complete Guide
Olive Oil Acidity (FFA) Explained
The Truth About "Product of Italy" Labels
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