https://serve.castfire.com/audio/8618013/8618013_2026-08-25-195413.64kmono.mp3
The “Made with Avocado Oil” label has been showing up more and more in supermarket aisles. You find it on products like chips, mayonnaise, and salad dressings. They are sold at premium prices because of the perception that, for example, avocado oil chips are healthier than chips made the old-fashioned way with other types of oils and fats. But, the study found, what you see is seldom what you get.
In the audio clip above, Selina Wang, professor of Cooperative Extension in the UC Davis Department of Food Science and Technology tells WGN’s Steve Alexander that she and her team tested 54 avocado oil-labeled products, and 48 of them were adulterated with cheaper oils. The study was published in Applied Food Research.
Wang says it isn’t really a food safety concern, although for people who are avoiding soybean, sunflower or other types of oils in favor of avocado oil, it can lead to problems. It is, she says, economic fraud. “Consumers are paying extra for something they believe is better for them.” Offenders include some of the biggest brands and food companies out there. Wang says tortilla chips under Walmart’s bettergoods label, contained zero avocado oil. Soybean oil instead. Here’s the full list and scores:
Sample #BrandProduct nameCompositionally consistent with authentic oil1Boulder CanyonAvocado Oil Classic Sea Salt Kettle Style Potato ChipsNo2Boulder CanyonAvocado Oil Classic Sea Salt Kettle Style Potato ChipsNo3Boulder CanyonOlive Oil Classic Sea Salt Kettle Style Potato ChipsNo4Boulder CanyonOlive Oil Classic Sea Salt Kettle Style Potato ChipsYes5Lesser EvilMoonions Intergalactic Onion Made with Organic Avocado Oil No6Lesser EvilMoonions Intergalactic Onion Made with Organic Avocado OilYes7Lay’sBaked BBQ Flavored Potato Crisps Made with Olive Oil Yes8Lay’sBaked BBQ Flavored Potato Crisps Made with Olive OilYes9SimplyTostitos Sea Salt & Avocado Oil Tortilla ChipsNo10SimplyTostitos Sea Salt & Avocado Oil Tortilla ChipsNo11Trader Joe’sKettle Cooked Olive Oil Potato ChipsYes12Trader Joe’sKettle Cooked Olive Oil Potato ChipsYes13SieteKettle Cooked Sea Salt Potato Chips Made with Avocado Oil No14SieteKettle Cooked Sea Salt Potato Chips Made with Avocado OilNo15SieteMaiz Sea Salt Corn Tortilla Chips Made with Avocado OilNo16SieteMaiz Sea Salt Corn Tortilla Chips Made with Avocado OilNo17Kettle BrandSea Salt with a Hint of Pink Peppercorn Chips Made with Avocado OilNo18Kettle BrandSea Salt with a Hint of Pink Peppercorn Chips Made with Avocado OilNo19Kettle BrandApple Cider Vinegar Chips Made with Avocado OilNo20Kettle BrandApple Cider Vinegar Chips Made with Avocado OilNo21Jackson’sAvocado Oil Sweet Potato ChipsNo22Jackson’sAvocado Oil Sweet Potato ChipsNo23Jackson’sKettle Cooked Sea Salt Potato Chips Only with Avocado OilNo24Jackson’sKettle Cooked Sea Salt Potato Chips Only with Avocado OilNo25SproutsOrganic Sea Salt & A Hint of Lime Tortilla Chips Made with Avocado OilNo26SproutsOrganic Sea Salt & A Hint of Lime Tortilla Chips Made with Avocado OilNo27SproutsKettle Style Potato Chips Made with 100% Avocado Oil Sea Salt No28SproutsKettle Style Potato Chips Made with 100% Avocado Oil Sea SaltNo29Sensible PortionsGarden Veggie Straws Made with Avocado Oil Sea Salt No30Sensible PortionsGarden Veggie Straws Made with Avocado Oil Sea Salt No31TorresExtra Virgin Olive Oil Potato ChipsYes32TorresExtra Virgin Olive Oil Potato ChipsYes33BettergoodsHatch Chile Tortilla Chips Fried in 100% Avocado Oil No34BettergoodsHatch Chile Tortilla Chips Fried in 100% Avocado OilNo35Good HealthKettle Style Avocado Oil Potato Chips Sea SaltNo36Good HealthKettle Style Avocado Oil Potato Chips Sea SaltNo37GrazaExtra Virgin Olive Oil Potato ChipsYes38GrazaExtra Virgin Olive Oil Potato ChipsYes39SproutsBalsamic Vinaigrette with Avocado OilNo40SproutsBalsamic Vinaigrette with Avocado OilNo41Primal KitchenAvocado Oil and Vinegar Vinaigrette & MarinadeNo42Primal KitchenAvocado Oil and Vinegar Vinaigrette & MarinadeNo43Primal KitchenItalian Dressing & Marinade Made with Avocado OilNo44Primal KitchenItalian Dressing & Marinade Made with Avocado OilNo45Chosen FoodsLemon Garlic Dressing & Marinade Made with 100% Pure Avocado OilNo46Chosen FoodsLemon Garlic Dressing & Marinade Made with 100% Pure Avocado OilNo47Chosen FoodsZesty Italian Dressing & Marinade Made with 100% Pure Avocado OilNo48Chosen FoodsZesty Italian Dressing & Marinade Made with 100% Pure Avocado OilNo49Bella Sun LuciSonoma Vinaigrette Made with 100% Olive Oil Yes50Bella Sun LuciSonoma Vinaigrette Made with 100% Olive OilYes51BraggOrganic Vinaigrette Dressing Made with 100% Extra Virgin Olive OilYes52BraggOrganic Vinaigrette Dressing Made with 100% Extra Virgin Olive OilYes53BriannasClassic Balsamic Vinaigrette Made with 100% Avocado Oil No54BriannasClassic Balsamic Vinaigrette Made with 100% Avocado OilNo55California Olive RanchBalsamic Vinaigrette Dressing Made with Extra Virgin Olive Oil Yes56California Olive RanchBalsamic Vinaigrette Dressing Made with Extra Virgin Olive OilYes57Chosen FoodsVegan Mayo Made with 100% Pure Avocado OilNo58Chosen FoodsVegan Mayo Made with 100% Pure Avocado OilNo59Chosen FoodsClassic Mayo Made with 100% Pure Avocado Oil No60Chosen FoodsClassic Mayo Made with 100% Pure Avocado OilNo61Primal KitchenReal Mayonnaise Made with Avocado OilNo62Primal KitchenReal Mayonnaise Made with Avocado OilNo63Sir Kensington’sAvocado Oil MayonnaiseNo64Sir Kensington’sAvocado Oil MayonnaiseNo65BetterBody Foods100% Avocado Oil MayoNo66BetterBody Foods100% Avocado Oil MayoNo67GroveAvoYeah! Mayo Sauce Made with Avocado OilYes68GroveAvoYeah! Mayo Sauce Made with Avocado OilYes69GroveAvoYeah! Garlic Aioli Sauce Made with Avocado Oil Yes70GroveAvoYeah! Garlic Aioli Made with Avocado OilYes71Graza“Original” Mayo 100% Olive Pomace Oil & E.V.O.O. Yes72Graza“Original” Mayo 100% Olive Pomace Oil & E.V.O.O.Yes73Graza“Fancy” Mayo 100% Extra Virgin Olive Oil Yes74Graza“Fancy” Mayo 100% Extra Virgin Olive OilYes
Per Wang’s study: Researchers purchased the products in 2025 and 2026 from online retailers and California stores. They represent only a portion of the avocado oil processed food market.
“Consumers are increasingly paying a premium for products made with avocado oil or olive oil,” said lead author “They deserve to get what they pay for and food manufacturers deserve confidence that the ingredients they purchase from suppliers are authentic.”
Researchers found that of the products tested, 93% of chips, 71% of mayonnaises and 100% of salad dressings labeled as authentic avocado oil contained other oils. By contrast, when researchers applied the same purity tests to 20 olive oil-labeled processed foods, only one failed.
The gap between avocado and olive oil results reflects the fact that olive oil authenticity has been studied, tested and scrutinized for decades. Avocado oil is a relatively new and expensive product category and has not been monitored at the same level. As a result, consumers have less protection against misleading labels.
A 2020 study found 82% of commercial bottled avocado oil were either rancid or mixed with other oils. A later study found 70% of private label oils were rancid or adulterated.
Detecting adulterated oil in processed foods
Researchers measure fatty acids and sterols — chemical “fingerprints” unique to each oil — to verify authenticity. One potential concern is that processing, such as deep frying, blending or emulsifying, can change those chemical fingerprints. Wang’s team tested that directly and found fatty acids and sterols changed minimally. The study also used conservative criteria when evaluating authenticity.
“In our experience, we’ve noticed natural variables, such as geographic origin and avocado variety, can change these fingerprints,” said Wang. “So we gave the samples some wiggle room, giving them a 10% margin of deviation to account for that, but 89% of the avocado products still failed.”
Suppliers may be source of avocado oil adulteration
Wang said brands whose products failed may not know they are using adulterated oil. Many food companies source their oils from third-party brokers or from several different suppliers. Without rigorous testing, food companies may never detect adulterated oil. Wang said the adulteration likely originates with oil suppliers.
“If consumers are buying potato chips that say they’re made with 100% avocado oil, that should be the product that they’re getting,” noted Wang. “I don’t think there is enough accountability throughout the supply chain. Suppliers of adulterated oil may be hiding behind a couple of layers of supply chain, making it difficult to identify where the problem originated.”
Wang said at the same time, food companies could do more to monitor and verify the authenticity of the oil they purchase.
Consumers face the same outcome either way: They pay premium prices for products that aren’t what they claim to be. Avocado oil products in the study were priced comparably to olive oil products or higher — yet olive oil products were overwhelmingly pure while avocado oil products were overwhelmingly not.
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