Avocado Oil: Ingredient or Marketing Tool?

Avocado oil has become a premium selling point. It appears on bags of chips, jars of mayonnaise and bottles of salad dressing, often marketed to people who want to avoid certain other oils or believe avocado oil offers a healthier choice.

That promise can cost extra. But what happens when laboratory testing suggests that the oil in some of these products doesn't match the ingredient consumers believe they're paying for?

A peer-reviewed study from the University of California, Davis, has raised that question. Its findings have since prompted a Texas investigation and a growing wave of proposed class-action lawsuits.

The central issue is simple: Are consumers paying for a genuine ingredient—or for the marketing story attached to it?

The study: 48 out of 54 samples failed

In July 2026, UC Davis researchers published a study in Applied Food Research examining packaged foods labeled as containing avocado oil as their only oil ingredient.

The researchers tested 54 samples representing 27 products purchased online and from California stores in 2025 and 2026. The products included chips, mayonnaise and salad dressings.

The results were striking:

• 48 of 54 samples (89%) had chemical profiles inconsistent with authentic avocado oil.
• 93% of the chip samples failed the authenticity assessment.
• 71% of the mayonnaise samples failed.
• 100% of the salad-dressing samples failed.

The researchers also tested 20 olive-oil-labeled processed-food samples. Only one failed the corresponding authenticity assessment.

That comparison deserves attention. The findings were not simply that all oils in processed foods were equally difficult to authenticate.

The researchers allowed a 10% margin

Natural oils vary. Avocado variety, growing conditions and geographic origin can affect an oil's chemical composition.

The researchers accounted for natural variation by allowing a 10% margin of deviation in their assessment. Even with that allowance, 48 of the 54 avocado-oil-labeled samples failed.

The team examined fatty acids and plant sterols—chemical fingerprints that help distinguish different oils. The researchers also investigated whether processing, frying or emulsifying substantially changed those fingerprints. They reported that the measured markers changed minimally.

UC Davis characterized the failed samples as adulterated with cheaper oils. The findings therefore go beyond a suspicion based on taste, color or appearance.

There are still important limits. A chemical mismatch does not reveal the exact percentage of avocado oil in a failed sample, establish precisely where substitution occurred, or prove that a manufacturer knowingly used another oil.

The lead researcher said adulteration likely originates with suppliers. That raises a further question: are food manufacturers independently verifying the oil they purchase, or relying on suppliers' assurances?

Whatever the answer in an individual case, a supply-chain problem does not make ingredient verification any less important.

What does the price comparison show?

The study's own price data make the consumer issue more concrete.

Among the chip products examined, avocado-oil-labeled chips ranged from approximately 30 cents to $2 per ounce. Comparable vegetable-oil chips ranged from approximately 44 cents to 62 cents per ounce.

Those ranges overlap at the lower end, but the most expensive avocado-oil products cost substantially more per ounce than the conventional-oil products in the comparison.

The figures also show why it would be misleading to say that every avocado-oil product costs five times as much. The premium varied considerably.

But the underlying issue remains:

If the ingredient is the reason for the premium, authenticity is part of what the consumer is paying for.

Consumers may deliberately choose an avocado-oil product because they want to avoid other oils. They may also believe the product is a healthier choice. If the advertised ingredient is not authentic, the purchase decision has been made on a potentially misleading premise.

That possibility is not proof of wrongdoing by any particular company. It is, however, a compelling reason to demand reliable testing and accurate labeling.

Chosen Foods: what the testing and the company say

Chosen Foods is a useful example because avocado oil is central to its product identity.

The UC Davis study reported that both tested production lots of Chosen Foods Classic Mayo were inconsistent with authentic avocado oil.

The subsequent legal complaints have identified four Chosen Foods products tested by the researchers: Classic Mayo, Vegan Mayo, Lemon Garlic Dressing and Zesty Italian Dressing. According to the complaints and reporting on the brand-level results, all four products failed in both lots—eight samples in total.

That broader result should be distinguished from the specific Classic Mayo finding described in the original UC Davis announcement. The original research announcement and published study are the primary sources for the scientific findings; complaints are legal documents that also make allegations about the broader product line.

Chosen Foods has publicly denied that its products contain undisclosed seed oils. The company says it uses pure avocado oil and stands by its products.

The company's denial does not independently settle the scientific question. Equally, a chemical mismatch does not prove that the company knowingly substituted another oil. The lead researcher said adulteration likely originates with suppliers, meaning a manufacturer might receive oil that does not match its specifications.

The fair conclusion is that the test results raise serious questions about the samples examined. The precise composition of the products, the source of any mismatch and responsibility for it require evidence.

Texas opens an industry-wide investigation

On August 20, 2026, Texas Attorney General Ken Paxton announced an investigation into companies marketing products as made with avocado oil.

The attorney general's office issued civil investigative demands to Primal Kitchen, Siete Foods and Chosen Foods, seeking information as part of an inquiry into potentially deceptive marketing and undisclosed oils.

These demands are investigative measures, not findings that the companies violated the law.

The investigation highlights a broader consumer concern. People rely on ingredient labels to make purchasing decisions, while manufacturers may rely on suppliers to deliver the ingredients specified on those labels.

If an oil is substituted or diluted without proper disclosure, the issue can extend throughout the supply chain. Regulators will need evidence to determine whether particular companies violated applicable laws.

Lawsuits multiply across the food industry

The legal response has grown well beyond one lawsuit against one mayonnaise brand.

A lawsuit tracker updated October 12, 2026, counted at least 27 proposed federal class actions filed or removed to federal court between August 18 and October 7, involving 11 brands.

The brands named include:

• Kettle Brand
• Siete
• Simply Tostitos
• Boulder Canyon
• Good Health
• Sprouts store-brand products
• Chosen Foods
• Sir Kensington's
• Primal Kitchen
• Sensible Portions
• Jackson's

The lawsuits generally allege that consumers were misled into paying a premium for foods advertised as containing avocado oil when testing allegedly found other oils.

The Chosen Foods cases listed in the tracker are:

• Hebert v. Chosen Foods: filed in the Eastern District of Louisiana on August 28, 2026, and amended September 4.
• Bonkowski v. Chosen Foods: filed in the Central District of California on October 1, 2026.
• Noohi v. Chosen Foods: originally filed in California state court in August and removed to the Central District of California on October 7, 2026.

The distinction between filing and removal matters. A case that moves from state court to federal court is not necessarily a newly initiated lawsuit.

The tracker also notes that the cases remain at an early stage. No class had been certified and no company had been found liable in the cases listed in its October 12 update.

The number of lawsuits is evidence of growing legal scrutiny—not proof that every allegation is true.

An important question: how much can two samples tell us?

The UC Davis study tested two production lots per product. That is useful for identifying potential authenticity problems in the samples examined, but it raises a question about how far the results can be generalized.

Do two samples establish that every product sold under a brand, across different production runs and over time, has the same problem?

Not by themselves.

The findings can support conclusions about the tested samples. Broader claims about an entire product line require additional evidence, ideally including more production lots and independent testing.

This limitation matters both scientifically and legally. It does not erase the findings, but it helps define what they can reasonably establish.

One laboratory, important findings—and limits

The UC Davis study was peer-reviewed and used chemical analysis. The 10% tolerance for natural variation also addresses a reasonable concern about the interpretation of oil fingerprints.

Still, the research has limitations.

The team tested a relatively small selection of products, with two production lots per product, purchased online and from California stores. The results do not establish how common the problem is across every brand, retailer, production run or region of the country.

The findings also come from one research laboratory. I found no independent replication of this specific packaged-food study in the sources reviewed for this article.

That does not invalidate the study. It means independent testing would strengthen confidence in how widely its results apply.

Nor does a chemical mismatch establish the exact percentage of avocado oil in a failed sample. It does not, by itself, establish intent, identify precisely where substitution occurred, or prove that every product from a brand is affected.

The evidence is therefore strongest for the specific samples tested and weaker when extrapolated to the entire market.

Is avocado oil itself the problem?

No. Authentic avocado oil is a legitimate food ingredient, rich in monounsaturated fat. The issue here is not that avocado oil is inherently bad.

Nor does avocado oil automatically make a packaged food healthy. Chips remain snack foods, mayonnaise is calorie-dense, and dressings vary in their salt, sugar and overall composition.

It is worth separating two questions:

• Nutrition: Is the food, and the type of fat it contains, a sensible choice within the overall diet?
• Authenticity: Does the product contain the ingredient its label and marketing lead consumers to expect?

A product can be nutritionally reasonable yet have an ingredient-authenticity problem. Conversely, a product can contain genuine avocado oil and still be an everyday food best consumed in moderation.

The authenticity question deserves attention in its own right. Consumers should not have to accept a questionable ingredient claim simply because the ingredient has a favorable reputation.

What should consumers do?

There is no dependable home test that can establish whether a finished food contains authentic avocado oil. Color, smell, taste and price are not reliable proof.

For now:

• Read the full ingredient list. It tells you what the manufacturer declares, although it cannot independently confirm authenticity.
• Treat premium claims as claims, not proof. A higher price does not guarantee a higher-quality ingredient.
• Look for credible independent verification. Transparent testing and meaningful quality controls are more useful than an unsupported assurance on the front of a package.
• Consider the whole product. An avocado-oil claim does not automatically make chips, mayonnaise or dressing a healthier choice.
• Expect accountability from manufacturers and regulators. Consumers should not have to conduct their own forensic investigation to trust a food label.

The longer-term solution is better standards for avocado-oil authenticity, reliable testing and meaningful controls throughout the supply chain.

The bottom line

Avocado oil can be a legitimate ingredient. But a premium label is not proof of purity, and a health-oriented marketing message is not a substitute for verification.

The UC Davis study found that 48 of 54 avocado-oil-labeled processed-food samples failed its authenticity assessment—even after researchers allowed a 10% margin of deviation. The findings have been followed by a Texas investigation and a growing number of proposed class actions.

Those developments make the issue more consequential, but they do not establish legal wrongdoing or prove that the study's results represent the entire market.

The central question remains simple: When a company charges extra for a premium ingredient, can it demonstrate that the ingredient is really there?

Consumers deserve a clear answer.