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Before 1990, McDonald’s fried their fries in beef tallow. The blend was about 93 percent beef tallow and 7 percent cottonseed oil, and it is what made the fries taste the way every adult over the age of 40 remembers them tasting. Then a cholesterol panic and a public campaign by a Nebraska millionaire named Phil Sokolof pushed McDonald’s to switch to vegetable oil in July 1990, and the fries have never tasted the same since.
I am not the first person to chase the old version at home. Cooks have been working backward from memory for 35 years. What I can offer is a method that gets you within an inch of the real thing in your home kitchen, using the actual fat that made the original fries famous.
This is the recipe I make whenever someone tells me they have never tasted a real fry. They always sit down skeptical and finish the plate.
What Made the Original Fries Different
It was not just the fat, but the fat was the biggest variable.
Beef tallow has a higher smoke point than the partially hydrogenated vegetable oils that replaced it, which means a hotter fry without acrid smoke. It contains saturated fats that solidify at room temperature, which means a thin, crisp shell on the fry rather than a soggy oil-soaked one. And it carries a small amount of meaty flavor that vegetable oil simply cannot reproduce.
The 1990 switch was driven by health concerns about saturated fat that have since been substantially revised. McDonald’s tried using a beef-flavor seasoning in the new oil to mimic the original taste. They did not succeed, and the fries have been a topic of mild grief ever since.
I covered the full story and the broader comparison in best beef tallow for french fries and the pre-rendered fries-at-home walkthrough. This post is the cooking-method companion.
For the foundation, the 4-lb grass-fed tallow is what I use for every batch. Four pounds covers about three large rounds of fries with reuse, and it is the closest match to the consistency the original McDonald’s blend would have given you.
The Method in One Paragraph
Russet potatoes, cut into quarter-inch matchsticks, soaked in cold water, dried thoroughly, blanched in 325F tallow until floppy but still pale, drained and rested, then fried again in 375F tallow until golden and crisp, salted the second they come out of the oil. That is the whole recipe. The rest of this post is why each step matters and how to get every step right.
What You Need
About 3 pounds of Russet potatoes. Not Yukon Gold, not red potatoes. Russets have the right starch-to-water ratio for fries that crisp on the outside and stay fluffy inside.
3 to 4 pounds of beef tallow. Whatever you use for a deep fryer should fill the cooking vessel about two-thirds. For a 6-quart Dutch oven, that is about 3 pounds. I use 4-lb grass-fed tallow and have just enough left to top up next time. If you want a budget-friendlier option that still produces excellent fries, the Traverse Bay 32 oz is the runner-up.
A 6-quart Dutch oven or heavy stockpot. Heavy is the operative word. Light pans cannot hold temperature when you drop in cold potatoes. Iron, enameled iron, or carbon steel all work.
A frying thermometer that can read 300F to 400F. The temperature targets are too tight to eyeball. I use a clip-on thermometer that hooks onto the side of the pot.
A spider strainer or a slotted spoon. For lifting fries in and out without dragging tallow off the surface.
Fine salt. Diamond Crystal kosher or sea salt. Salt the second the fries come out of the oil, while the oil is still hot on the surface, so the salt sticks instead of sliding off.
Step by Step
Step 1: Cut the Potatoes
Wash the Russets. Do not peel them. The skin contains starches and minerals that give the fry a tiny bit of complexity, and removing it does not actually improve the texture.
Cut each potato into quarter-inch matchsticks. Use a knife or a fry cutter, whichever you have. Quarter-inch is the McDonald’s cut. Eighth-inch gives you shoestrings, half-inch gives you steak fries. For the classic profile, stick to quarter-inch.
Step 2: Cold-Water Soak
Drop the cut fries into a bowl of cold water and stir to release surface starch. Let them sit for at least 30 minutes, and up to overnight in the fridge. The longer they soak, the more surface starch comes out, and the crisper the final fry.
Drain the fries in a colander, then spread them on a clean kitchen towel and pat them very thoroughly dry. Wet fries hitting hot tallow will spit, splash, and lower the temperature of the oil too fast. Dry them like you mean it.
Step 3: Heat the Tallow to 325F
Place your Dutch oven on medium heat with the tallow inside. As the tallow melts and warms, the thermometer will climb. Bring it to 325F. This is the blanching temperature. The goal of the first fry is not to brown the fries. The goal is to cook them through.
For the full temperature reference across every kind of frying, my beef tallow for frying temperatures post is the cheat sheet I work from.
Step 4: First Fry at 325F
Add the dried fries to the 325F tallow in batches. Do not overload. About 5 to 7 ounces of cut potatoes per quart of oil is the right ratio. More than that and the temperature crashes, the fries absorb oil instead of cooking, and you end up with soggy fries.
Cook for 5 to 7 minutes. The fries should turn from raw white to a faint cream color and look limp when you pull one out and let it droop. They should not be brown. If they are browning at this stage, your oil is too hot.
Lift the fries out with a spider strainer and spread them on a wire rack set over a baking sheet. Let them rest for at least 10 minutes. The rest is what makes the second fry work. The interior of the fry continues cooking while the surface dries out, which is what gives you a thin, crisp shell on the second pass.
You can also rest blanched fries in the fridge for several hours or overnight, then second-fry just before serving. This is the move that makes restaurant-quality fries doable on a weeknight.
Step 5: Heat the Tallow to 375F
Once you are ready for the second fry, bring the tallow up to 375F. This is the temperature where the surface of the fry browns and crisps quickly without overcooking the inside.
Step 6: Second Fry at 375F
Drop the blanched fries back into the 375F tallow in batches. Same 5 to 7 ounces per quart rule. Cook for 2 to 4 minutes until they are golden brown and crisp. Stir them gently with the spider to keep them from sticking together.
Lift them out and drop them onto a fresh wire rack or onto paper towels. Salt immediately while the surface is still hot. The hot tallow on the surface acts like glue for the salt. If you wait 30 seconds, the salt slides off.
Serve immediately. Beef tallow fries are at their absolute best in the first three minutes after they come out of the oil. They are still very good 15 minutes later. After 30 minutes they have lost the magic.
How to Reuse the Tallow After
Let the tallow cool to room temperature. Strain it through a fine-mesh strainer lined with cheesecloth back into a clean container. The cheesecloth catches the tiny burnt bits that would carry over into the next batch and accelerate breakdown.
Properly filtered, the tallow from one fry session can be reused 5 to 8 times before it starts to look or smell off. I covered the full reuse criteria and the disposal signs in beef tallow for frying temperatures.
Between uses, store the strained tallow in a sealed container in the fridge. It solidifies into a creamy block that you melt down for the next fry session.
The Cut, the Soak, the Rest, and the Salt: Why Each Matters
I want to call these four details out specifically because they are what separate a good fry from a great one.
Quarter-inch is the right cut because it gives you enough surface area to crisp evenly and enough interior to stay tender. Thinner fries dry out. Thicker fries do not crisp.
The cold-water soak pulls surface starch out of the potato. Surface starch is what makes fries gummy on the outside instead of crisp.
The rest between the two fries is the most overlooked step. The blanched fry continues cooking from residual heat and steam, the surface dries, and the second fry hits a dry, partially set surface that crisps almost instantly. Skip the rest and you get soggy fries no matter how hot the second fry is.
Salting on the way out, while the tallow is still hot on the surface, is what makes the salt stick. Tossed-in-bowl salting works but never sticks evenly. Salt the rack while the fries are coming out.
The full case for using tallow over vegetable oil for fries is in best beef tallow for deep frying. The shorter version is that the texture is better, the flavor is better, and the smoke point is plenty for restaurant-style fries.
The cook section of the site, including the /cook/french-fries/ page, has the broader recipe library if you want to branch into other tallow-fried foods after this.
Frequently Asked Questions
Can I do this with frozen fries?
Yes. Skip the cut, soak, and blanch steps. Drop frozen shoestring or shoestring-cut fries directly into 375F tallow for 4 to 6 minutes. The result is not quite as good as starting from fresh Russets but it is still meaningfully better than frozen fries cooked in vegetable oil.
Do I really need to fry twice?
The double-fry method is what creates the crisp shell with a tender interior. A single high-temperature fry burns the outside before the inside is cooked. A single low-temperature fry leaves the fries pale and soggy. You can get away with one fry only on shoestring-thin cuts, which cook through fast enough that the temperatures align.
What if my tallow smokes before 375F?
Your tallow may have residual proteins or it may have already been over-used. Filter it and try again. If it still smokes below 400F, replace it. Fresh tallow like the 4-lb grass-fed jar holds 400F comfortably.
Will my house smell like a McDonald’s?
A little. Not as much as you might think. Tallow has less of an aggressive frying smell than seed oils do. Cracked window and a stovetop fan handle most of it. The smell that lingers in your hair is, on a Friday night, a feature.
Can I use the same tallow for other cooking after frying fries?
Yes. Filtered tallow from a fry session is excellent for searing steaks, frying eggs, and making the next batch of fries. It picks up a slight savory character from the previous use that actually improves the second-pass flavor.
How do I store leftover fries?
You cannot, really. They go limp in the fridge and they reheat as a shadow of themselves. Cook only what you will eat. If you absolutely must reheat, a 400F oven for 4 to 5 minutes is the best path.
Bottom Line
McDonald’s-style fries at home come down to four steps: Russets cut to a quarter inch, a real cold-water soak, two fries in beef tallow at 325F and 375F with a rest in between, and salt the second they come out.
For the fat, I default to 4-lb grass-fed tallow. For a budget pick that still gets you great fries, Traverse Bay 32 oz is the runner-up I keep on the shelf. Either one will produce a fry that tastes the way you remember McDonald’s tasting before the 1990 switch, except this time you made it at your stove. Make a double batch. Reuse the tallow next weekend. This becomes the dinner everyone in the house requests.