By Sydney Panagos, Co-founder of TIPS Chip
Beef Tallow vs Seed Oil: What's Actually in Your Chips?
If you flip over a bag of chips and read the ingredient list, the fat used to fry them does more work than the potatoes do. It's most of what makes the chip taste, smell, and behave the way it does. So the question worth asking isn't "is this chip natural?" — it's "what specifically is in the oil that fried it, and what happens to that oil when it gets hot?"
What did researchers find when they measured fried potatoes from real restaurants?
In a 2015 study published in the Journal of the American Oil Chemists' Society, Csallany and colleagues analyzed French fries from six fast-food restaurants. Using high-performance liquid chromatography (HPLC), they measured 4-hydroxynonenal (HNE) — a lipid peroxidation product the paper's own title labels "a toxic aldehyde." HNE forms when polyunsaturated fats (the dominant fats in seed oils) are heated to frying temperatures. The researchers found measurable HNE in every fast-food sample they tested.
That data point isn't a claim about every chip on every shelf — it's what one peer-reviewed lab measured in commercially fried potatoes. The mechanism (PUFA + heat = oxidation products) applies broadly to any chip fried in seed oil.
What does this mean in my kitchen?
There was a moment when I flipped over a bag of chips I used to eat all the time and actually read the ingredient list. It didn't match what I thought I was buying at all. The front made it seem simple, but the back told a completely different story — long lists of oils and ingredients I didn't really understand. That was a turning point for me. I started questioning how something as simple as a potato chip had gotten so complicated. That's when I realized the oil was really the difference. I stopped buying those products and started paying attention to how things were cooked, not just what they claimed to be. Now I keep it simple — if it's something I wouldn't cook with at home, I don't want in my food. That shift changed how I shop, cook, and ultimately what led me to create TIPS.
Why do we cook TIPS chips in beef tallow?
Beef tallow is roughly 50% saturated and 40% monounsaturated fat, with only about 2-3% polyunsaturated. Seed oils flip that ratio — corn, soybean, and sunflower oils are 50-70% polyunsaturated. PUFAs are exactly the fats Csallany's group watched degrade into HNE under frying heat. We cook every TIPS chip in 100% beef tallow because the chemistry of the fat going into the fryer determines what comes out of it.
How do you read a chip ingredient list quickly?
Look at the second line of the ingredient list — right after "potatoes." If it says "vegetable oil," "high-oleic safflower oil," "sunflower oil," "soybean oil," "canola oil," or "corn oil," that's the fat the chip was fried in. If it says "beef tallow," "tallow," or "lard," it was fried in a traditional animal fat. The marketing on the front of the bag rarely tells you this. The second ingredient does.
Source: Csallany AS, Han I, Shoeman DW, Chen C, Yuan J. 4-Hydroxynonenal (HNE), a Toxic Aldehyde in French Fries from Fast Food Restaurants. Journal of the American Oil Chemists' Society. 2015;92(10):1413–1419. DOI: 10.1007/s11746-015-2699-z.