Beef Tallow Burgers: What Really Changes on Your Plate

Beef tallow burgers change the taste and the fryer chemistry when a restaurant swaps seed oil for tallow, but the patty stays the same and every spoonful of cooking fat still lands in your daily total. On a month like Dr. Mike's, that spoonful counts. If you aren't counting it, you're guessing.

Why are restaurants switching to beef tallow?

Chains are weighing tallow because customers want it and the seed-oil backlash is loud. Whole Foods Market put Tallow Takeover first on its list of 2026 food trend predictions. Axios reported that the grocer expects tallow-based pantry goods on shelves by early 2026.

The fryer is where the switch shows up first. Restaurant Business reported that Steak ‘n Shake moved its shoestring fries from vegetable oil to beef tallow, citing taste and authenticity. That is a side-dish decision before it is a patty decision. Social media did the rest.

Here is the real problem. A headline about the fryer tells you almost nothing about what lands on your plate. When I designed the experiment, I made one choice early: no bun, no condiments, no drink and no fries, which meant no seed oils in fast food on the plate at all. Only the patty and water.

What changes when beef tallow burgers replace seed-oil cooking?

Three things change: the taste, the chemistry in the pan, and the story the menu tells. The patty itself does not. Tallow is rendered beef fat, so a patty seared in it tastes more like steak, and a fry cooked in it tastes like the old days.

The chemistry is where people fight, and the evidence says the picture is mixed. A re-analysis of the Minnesota Coronary Experiment found that replacing saturated fat with linoleic-acid-rich vegetable oil lowered cholesterol without lowering deaths, though the trial is old and its follow-up was incomplete. The American Heart Association advisory went the other way, concluding that a swap toward polyunsaturated fats lowers cardiovascular disease. A meta-analysis of observational studies found saturated intake was not associated with death or heart disease, while industrial trans fat was.

Sit with that for a moment. Smart people read the same trials and land in different places. Anyone who tells you the fryer swap settles the question is selling something.

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What stays the same on a burger-heavy plate?

The meat stays the same. A tallow fryer does not change the cut, the grind or the grease already inside the patty.

Neither does the rest of the tray. The book notes that a typical fast-food bun can hold up to 9 grams of sugar. Switch the fryer and the bun, the sauce and the soda still ride along. That is why the experiment stripped the plate down to the patty itself: change one thing, and you can see what that one thing does.

Let me rephrase the previous sentence. Change one thing, and you at least have a chance of knowing what happened. Change five, and you are reading tea leaves.

Why does the cooking fat count on a 600-patty month?

It counts because whatever is in the pan ends up in you. Tallow that clings to a patty adds to what the meat already carries; it does not replace it.

The film shows Dr. Mike working out his own numbers on camera from label data, not a lab assay: 160 grams of fat a day, 50 of them saturated, across 20 patties a day for 30 days. I tried to get those patties tested. Every lab either refused or quoted a minimum of $12k, so the patties were never lab-tested. I am not going to guess what they were cooked in.

That is the entire stakes. On a plate eaten once, a slick of tallow is a rounding error. On a patty eaten twenty times a day, it compounds. Our saturated fat breakdown walks through what that load looked like.

How do you cook beef tallow burgers at home?

Use a hot, heavy pan, a thin layer of tallow, and a thermometer. Here is the test I would run in your own kitchen.

• Use a little. A thin film is enough to sear. More in the pan is more on your plate.
• Buy local. A local butcher will often sell tallow, or trimmings you can render yourself.
• Get the pan hot first. A hot surface builds the crust that carries the flavor.
• Leave it alone. Pressing a patty squeezes its own juice into the pan.
• Time it. A grill expert told Food Republic about the 5-6-7 rule: five minutes on one side, six on the other, seven resting, for patties around half an inch thick.
• Check, then trust. A thermometer beats a guess every time.
• Write down the spoonful. If you track what you eat, track the pan, not just the patty.

Boring is good. The best patty is the one you can repeat, measure and adjust.

What does Dr. Mike's month say about the cooking-fat question?

The film suggests that one ingredient swap is never the whole story. That is my interpretation, and I hold it loosely.

Dr. Mike wrote on Day 8 that he was tired of one flavor and missing cooking. On Day 26 he was jealous of my turkey burger, especially once I added mustard. I would like to say I did that for science. I did not.

In my experience, I do well on grass-fed beef with organs, and vegetables as a treat. That is my belief about my own software, not a finding. Individual results vary. What happened to Dr. Mike’s body by Day 30 is in the film, and I am not going to give it away here.

Frequently asked questions

Freddy’s does not appear to use tallow. Frypedia reports that its shoestring fries are made in a blend of soybean and high-oleic soybean oil, based on the chain’s allergen documentation. Menus change, so check the chain’s own allergen page before you order if the cooking medium matters to you.

It is a timing rule for grilled patties: five minutes on the first side, six on the second, then seven minutes of rest. The grill expert who described it says it suits patties around half an inch thick and gives a medium result. Thicker or thinner patties need a thermometer instead.

Mostly it is a menu name. The label tells you how a chain markets the patty, not which cut went into the grind or how lean it is. If you want to know what you are eating, ask the butcher for the cut and the lean-to-fat ratio, then cook it the way you cook any patty.

No. The idea was to remove the sugar from the bun, condiments and drink, and the vegetable oils used for the fries. That left only the hamburger patty and water for 30 days. The fryer question chains face now was taken off his plate on purpose from the start.

No, the pan does not decide that. A bunless patty is already close to zero carbohydrate; the bun, the sauce and the sides are what move the number. Using tallow changes the taste and adds calories, so on keto it shifts your energy total rather than your carb count.

The Bottom Line

The fryer will change at a lot of chains this autumn. The meat will not, and what is in the pan will still count toward what is on your day. Count the spoonful, cook the patty simple, and test before you believe anyone, including me.

If you want to see what one month of plain patties did to one fit doctor, with bloodwork at every step, watch The Keto Project on Prime Video. The ending is the part I will not spoil. What will you do with it?

Sources

• The Next Big Things: Our Top Food Trend Predictions for 2026 (Whole Foods Market)
• Frozen meals, fiber and fat top 2026 Whole Foods' food trends (Axios)
• Steak 'n Shake is now cooking its fries in beef tallow (Restaurant Business)
• What Is The 5-6-7 Rule When Cooking Hamburgers And Does It Actually Work? (Food Republic)
• Freddy's fries: no beef tallow, soybean oil (Frypedia)
• Re-evaluation of the traditional diet-heart hypothesis: Minnesota Coronary Experiment (Ramsden et al., 2016)
• Dietary Fats and Cardiovascular Disease: AHA Presidential Advisory (Sacks et al., 2017)
• Intake of saturated and trans unsaturated fatty acids and risk of mortality, CVD and type 2 diabetes (de Souza et al., 2015)