Is Avocado Oil Fake? UC Davis Just Tested It Again (2026)
You bought the good one. The bottle that cost nine dollars instead of four, because you read somewhere that avocado oil was the clean choice and you wanted the clean choice for your family. You cook eggs in it. You roast vegetables in it. You have been quietly proud of that swap for a couple of years now. Here is the short true answer, and it is not about you doing anything wrong. In July of 2026, researchers at UC Davis tested 54 foods made with avocado oil, like chips, mayo and salad dressings, and found that 89% of them were adulterated. Not spoiled. Cut with cheaper oils that cost a fraction of what you paid. The premium you paid did not buy you what the front of the package promised, and there was no way for you to tell from the aisle.
The free 3 minute scan starts with the room you are most worried about. It asks for your first name and cell number and texts your score once. No calls.
Run the Free ScanWhat is actually in a bottle of avocado oil?
Quick answer: Often sunflower oil, safflower oil, or soybean oil. In the 2026 testing, every single salad dressing labeled with avocado oil came back mixed with something else.
The most recent testing was published on July 15, 2026 in the journal Applied Food Research. A team at UC Davis led by Selina Wang bought 54 products labeled as being made with avocado oil, from online retailers and California stores, and ran them through authenticity testing. The results, published by UC Davis, break down like this:
- 93% of chips labeled as made with avocado oil were adulterated
- 71% of mayonnaise failed the same test
- 100% of salad dressings failed
- 89% across all avocado oil products tested
This is not the first time. Back in 2020, the same lab tested bottled avocado oil itself and found that 82% of samples were either stale before the expiration date printed on them, or mixed with other oils. In three of those bottles, the product sold as pure or extra virgin avocado oil was found to be nearly 100% soybean oil.
The researcher who ran that testing put it plainly at the time: "I was surprised some of the samples didn't contain any avocado oil."
Six years apart, two studies, and the number barely moved. That is the part worth sitting with. This was not a bad batch or one dishonest company. It is how the category has been operating the whole time you have been buying it.
Is every oil like this, or is it just avocado?
Quick answer: In this round of testing, avocado was the outlier. Only 1 of 20 olive oil products failed the same purity test.
I want to be straight with you here, because the honest version of this is more useful than the scary version.
The same UC Davis team ran 20 products labeled with olive oil through the same testing, as a comparison group. One failed. Twenty tested, one problem. Against 89% for avocado.
So no, this is not a story about how everything in your kitchen is poison and nothing can be trusted. It is a story about one specific category where the fraud is unusually easy and unusually common, because avocado oil is expensive to produce, hard to test for, and carries a health halo that lets a bottle charge double.
That matters for you practically. It means you do not have to burn your kitchen down this week. You have one thing to look at, not forty. And if you have been feeling like the more you learn the more impossible it all gets, this is the rare case where the problem got smaller when someone actually measured it.
So what do I cook with instead?
Quick answer: Something you can trace to a person. The problem with the bottle was never the ingredient, it was that nobody could verify it.
Here is the trap in this whole conversation. The instinct is to go find a better bottle. A more expensive one, a fancier brand, one with a certification stamp on the front. But look at what the testing actually found. The bottles that failed were the premium ones. The "100% pure" ones. The label was not a signal of anything, because the label is the thing being faked.
You cannot solve a labeling problem by reading labels more carefully.
What ends the guessing is knowing where the fat came from and who rendered it. Beef tallow from a farmer whose cattle you can go look at is not a mystery product. It does not need a certification, because you did not need a stranger's word for it. It has been what American families cooked in for most of the country's history, right up until factories found something cheaper to sell.
| What you have been buying | What ends the guessing |
|---|---|
| A bottle labeled 100% pure avocado oil | Beef tallow from a farm near you |
| At least 82% of bottles tested in 2020 were stale or mixed with other oils | You met the person who raised the animal |
| You paid a premium for a claim on the front | You paid a farmer for something you watched them make |
| No way to verify from the aisle | You can drive out and ask any question you want |
| Rancid before the date printed on it | Shelf stable, and you know when it was rendered |
Am I the only one who feels lied to about this?
Quick answer: No. There are active class action lawsuits from shoppers who felt exactly the way you do right now.
In September 2024, a shopper filed suit against Aldi in federal court in New York over its Simply Nature "100% Pure Avocado Oil." The complaint alleges the bottle contained undisclosed cheaper oils, and it cites independent testing from UC Davis that reportedly identified oleic sunflower and safflower oils in a product whose ingredient list named only refined avocado oil. Aldi settled that case in September 2025. Then the July 2026 study set off a new wave. Shoppers have filed dozens of class actions since, over avocado oil chips, mayo and dressings from Kettle Brand, Utz, Sprouts and Chosen Foods. These are allegations, and no court has ruled on them yet.
But that is a lot of people, in a lot of states, who stood in an aisle and made the same careful choice you made, and later found out the bottle was not what it said.
You are not paranoid and you are not gullible. You were sold something by people who knew you could not check.
Shannon's Advice
Straight talk from Shannon
Nobody handed me this. I figured it out young, on my own, back when there was no one to ask and nothing on a package worth believing. And what I learned early is the thing I want you to take from today: the answer is never in the aisle. They will always be one step ahead of you on the front of a bottle, because they write it and you only get to read it.
So I stopped playing that game. I do not buy my food from those places. I know the farm my beef comes from. I know what those cattle eat. My fat comes from an animal I can point at, and I have never once had to wonder whether a lab in California would find something else in it.
You do not have to fix your whole kitchen by Friday. You do not have to throw out the bottle in your cupboard tonight. Find one farm near you and go meet the farmer who raises the food. Ask them anything. That relationship is the only certification that has ever actually meant something, and it is the first switch that makes every switch after it easier.
You are already the kind of woman who will do it, or you would not have read this far.
Who you become when you stop guessing
There is a particular tiredness that comes from trying to shop your way to safety. You research, you upgrade, you pay more, and then a study comes out and you find you were back at the start the whole time. That is not a failure of effort on your part. That is what happens when the system you are trusting is the thing that is broken.
The women who get out of that loop are not the ones who read labels the hardest. They are the ones who stopped needing the label at all, because they know a person now.
That is a different kind of confidence. It does not come apart when the next study drops.
Frequently asked questions
Is avocado oil bad for you?
That is not quite the right question, and it is the one the industry would rather you argue about. Real avocado oil is a fine cooking fat. The problem found in testing was that most products were not real avocado oil. You cannot evaluate whether something is good for you when you do not know what it is.
Can I tell if my bottle is fake at home?
Not reliably. The adulterants used are chosen specifically because they are hard to detect by taste, color or smell. UC Davis needed laboratory testing to find them. If a home test worked, this fraud would not be this widespread.
Is there a brand that passed?
In the 2020 bottled-oil testing, a small number of samples came back pure. But the 2026 results on processed foods show the problem got worse, not better, in the years since. Chasing the one brand that passed a test six years ago is still playing their game. It puts you back in the aisle, trusting a claim.
Am I overreacting about this?
No. There are federal lawsuits from shoppers who feel the same way, and a university lab that has now published on this three separate times because the problem kept not going away. Noticing something is off is not overreacting. It is the thing that makes you the one in your family who catches it.
Where do I even start?
Not with your whole kitchen. Start by finding out which room in your house is actually the worst one, because for most families it is not the one they expect. That takes about three minutes and costs nothing.
You do not overhaul your house tonight. You get one honest answer about the room that needs you most, and you start there. Free. It asks for your first name and cell number and texts your score once. No calls.
Take the free scanProof
UC Davis, July 15, 2026: testing of 54 products labeled with avocado oil found 89% adulterated overall, including 93% of chips, 71% of mayonnaise and 100% of salad dressings. Published in Applied Food Research. Read the UC Davis summary. University research finding, reported by the institution.
UC Davis, 2020: of 22 avocado oil samples tested, 82% were rancid before their expiration date or mixed with other oils. Three bottles labeled pure or extra virgin were found to be nearly 100% soybean oil. Published in Food Control. Read the UC Davis summary. University research finding, reported by the institution.
UC Davis, private label testing: only 31% of store-brand samples tested were pure, and 36% were of the quality advertised on the bottle. Read the UC Davis summary. University research finding, reported by the institution.
Frost v. Aldi Inc., No. 1:24-cv-07095, filed September 18, 2024 in the U.S. District Court for the Southern District of New York: the complaint alleges Aldi's Simply Nature "100% Pure Avocado Oil" contained undisclosed cheaper oils, citing independent UC Davis testing. Read the filing summary. The two sides reported a settlement in principle, and the judge closed the case on September 29, 2025. No finding of liability was made.
Heiland v. The Campbell's Company, No. 1:26-cv-06598, filed August 18, 2026 in the U.S. District Court for the Eastern District of California: the complaint alleges Kettle Brand chips sold as made with avocado oil were made with cheaper oils, citing the July 2026 UC Davis testing. Read the Courthouse News report. These are allegations.
This was never really about a bottle of oil. It is about being the woman who protects her family and stops handing that job to a factory that has already been caught. You do not need to fix your whole kitchen tonight. You need 3 minutes and the truth about the worst room in your house. Run the free scan and find out what yours is.