This guide is about the alternative – the one your great-grandmother used, the one a restaurant line cook would run into a burning building to rescue, the one that will, if you let it, outlive you. We are talking about seasoned iron: carbon steel and its heftier cousin, cast iron. Bare metal, a bit of oil, some heat, and a surface that becomes more nonstick the longer you own it rather than less. No plastics. No mystery chemicals with acronyms. Just a pan that, treated with the bare minimum of respect, becomes the last frying pan you will ever need to buy.
There is a catch, naturally. The catch is that you have to understand what you are doing, because almost everything you have been told about these pans is either wrong, half-wrong, or a superstition handed down by someone who was also wrong. Let us fix that.
Carbon Steel vs Cast Iron: The Same Family, Different Tempers
Here is the thing nobody mentions: carbon steel and cast iron are essentially the same material wearing different outfits. Both are iron and carbon. The only meaningful difference is how much carbon. Carbon steel is roughly 99% iron and about 1% carbon. Cast iron is greedier about it – somewhere between 2% and 3.5%. That extra carbon is the entire personality difference between the two, the way a single additional espresso can be the difference between a charming person and an unbearable one.
What that carbon does is make cast iron thick, brittle, and heavy, and make carbon steel comparatively thin, springy, and light. A 12-inch cast iron skillet can weigh around 6.6 pounds and feel, in the wrist, like a small act of penance. A 12-inch carbon steel pan weighs closer to 4.8 pounds and has gently sloped sides, which is why it is the pan professional kitchens actually reach for when they need to flip, toss, and sear forty covers a night without developing a repetitive strain injury.
The practical division of labour goes roughly like this:
- Carbon steel heats fast, responds fast, and cools fast. It is the nimble one. Eggs, omelettes, fish, vegetables, anything that needs you to dial the heat up or down on a whim. J. Kenji Lopez-Alt, who has tested more pans than most of us have eaten hot dinners, calls carbon steel “your best bet” for exactly this responsiveness.
- Cast iron heats slowly, holds heat like a grudge, and is best for things that benefit from a pan that simply refuses to cool down. A steak dropped into a screaming cast iron skillet barely registers; the pan stays close to its original temperature and hands you a thick, even, properly browned crust. Cornbread, deep-frying, anything that goes from hob to oven.
Neither is “better.” They are tools with opinions. Most serious home cooks, in the fullness of time, end up owning one of each and pretending they did not mean to.
de Buyer Mineral B: 3mm carbon steel, made in France.
What Seasoning Actually Is (and Why It Is Not Magic)
Now to the part that launched a thousand internet arguments. Seasoning. The black, slick patina that turns a raw grey lump of iron into something an egg will slide off.
The folklore would have you believe seasoning is oil that has somehow “soaked into” the metal, a sort of greasy aura you must protect at all costs and which will vanish the instant it sees a bottle of Fairy Liquid. This is nonsense, and understanding why it is nonsense is the single most liberating thing you can learn about these pans.
Seasoning is not oil. Seasoning is what oil becomes after you cook it. When you heat a thin film of oil on iron, past the point where it would smoke, the oil molecules stop being oil. They break apart, recombine, and cross-link into a hard, solid, plastic-like coating bonded chemically to the metal. Kenji puts it plainly: seasoning is “a thin layer of polymerized oil… a plastic-like substance that has bonded to the surface of the metal.” It is no longer a fat. Soap, whose entire job is to grab fats, has nothing to grab.
If you want the chemistry done properly, the engineer Greg Blonder took an actual scientific run at this on genuineideas.com, and his conclusion is bracingly unromantic. Seasoning, he writes, is not even a tidy polymer but “an organic glass, with a random arrangement of atoms.” The crucial bit for your purposes: heat the oil above its smoke point and, in Blonder’s words, baking it “rearranges the chemical bonds, and most of the weak or dangling bonds find a willing partner.” That is the whole trick. Heat plus thin oil plus iron, repeated, builds a glassy, durable, genuinely non-stick surface. It is not a delicate spirit that lives in your pan. It is chemistry, and chemistry, unlike your relatives, can be relied upon.
This matters because it tells you exactly how to build seasoning (thin oil, high heat, repeat) and exactly why you cannot destroy it by being normal around it (it is bonded glass, not a film of grease). Everything else in this guide flows from that one fact.
The Nonstick Pan Is a Houseguest, Not an Heirloom
Let us address the elephant in the cupboard: the Teflon pan, and why we are so keen to see the back of it.
Conventional nonstick coatings are made from PTFE, a fluoropolymer in the family of so-called PFAS, the “forever chemicals” that have a genius for never breaking down and turning up, uninvited, in drinking water and bloodstreams worldwide. The nervous older relative, PFOA, was phased out of American cookware manufacturing by around 2015, which is reassuring until you learn that the compounds drafted in to replace it are not exactly celebrated for their wholesomeness either.
Now, in fairness: a nonstick pan used gently, at moderate heat, is generally considered safe. But cooking is not a gentle activity, and pans get hot. Overheat a PTFE pan – which is alarmingly easy to do with an empty pan on a powerful burner – and the coating can begin to off-gas, producing the flu-like delight known as polymer fume fever, a condition unsettling enough to have its own name. (Canaries, famously, do worse; if you keep birds, keep them out of the kitchen entirely.)
And then there is the simple, undramatic matter of time. A nonstick pan is a depreciating asset. Even the good ones last roughly two to three years, less if you scratch them or look at them with a metal spatula, after which the coating begins its slow migration from the pan into your food and the pan into landfill, where it will outlast the pyramids. You are not buying a pan. You are renting one, on a rolling three-year lease, and paying the deposit in microplastics.
Seasoned iron is the precise opposite of this arrangement. There is no coating to scratch off because the “coating” is bonded glass that rebuilds itself every time you cook. Kenji describes a well-worn vintage cast iron surface as being “as smooth and nonstick as a Teflon-coated pan, without the toxic chemicals.” That is the entire pitch, really. The performance of nonstick, minus the chemistry set, plus immortality.
Matfer Bourgeat: one piece of carbon steel, no coating, no rivets.
How to Season a Carbon Steel Pan, Step by Step
Right. Sleeves up. Your brand-new carbon steel pan has arrived, and it is the colour of a battleship and feels faintly oily. That oily film is a factory coating to stop it rusting in the warehouse, and your first job is to get rid of it. (If you bought a De Buyer Mineral B, the coating is beeswax – the “B” literally stands for beeswax – and it needs to come off before anything else happens.)
- Strip the factory coating. Scrub the pan thoroughly with hot, soapy water. Yes, soap. This is the one moment everyone agrees you are allowed to use it with abandon. Scrub off every trace of wax or oil. Dry it completely.
- Choose your oil. You want a thin, highly unsaturated oil, because unsaturated fats are more reactive and polymerize more readily. Kenji’s accepted list is reassuringly cheap and boring: vegetable, canola, corn, soybean, peanut, or flaxseed. Grapeseed works well too. Do not reach for the romantic option – “it’s an old myth that bacon fat or lard makes the best seasoning agent,” Kenji notes, a myth born of the fact that those fats were simply cheap back when. A neutral supermarket oil is genuinely better.
- Wipe on a film so thin it looks like a mistake. Put a few drops of oil on a paper towel and rub it over every interior surface. Then – and this is the step everyone gets wrong – wipe it back off with a clean towel until the pan looks barely oiled, almost dry, with no visible pooling or shine. Thin is the entire game. A thick coat does not give you thick seasoning; it gives you a sticky, gummy mess that never fully hardens.
- Heat it until it smokes, and then some. On the hob, crank the burner to high. Carbon steel will visibly change colour – from grey to a bronzed, mottled brown, to blue-black – as the oil polymerizes. Tilt and rotate the pan so the whole surface, including up the sloped sides, gets its turn over the heat. Let it smoke. The smoke is not a warning; the smoke is the point.
- Repeat. Let it cool slightly, wipe on another whisper-thin coat, heat again. Two or three rounds will give you a respectable base colour and a usable pan. You are not finished – you are started.
The truth nobody selling you a fancy pan wants to admit: the best seasoning is built by cooking, not by ceremony. Fry some potatoes in a generous slick of oil. Sear some chicken thighs, skin down. Make a pile of smash burgers. Every oily, high-heat thing you cook lays down another microscopically thin layer of glass, and within a few weeks of regular use your pan will be browner, blacker, and slicker than any single seasoning session could ever make it.
How to Season Cast Iron (Slightly Different, Just as Easy)
Cast iron follows the same logic – thin oil, high heat, repeat – but its bulk makes the oven the better venue, because an oven heats that heavy lump of metal far more evenly than a single burner can. Most modern cast iron arrives pre-seasoned, but that factory layer is, as Kenji diplomatically puts it, “mediocre at best,” so a few rounds of your own will pay off.
Lodge 12-inch cast iron: around $35, pre-seasoned, made in the USA.
- Scrub with hot soapy water, dry completely.
- Rub on a highly unsaturated oil – corn, vegetable, canola – then wipe it almost entirely back off. Thin, always thin.
- Bake it at around 450F for 30 minutes. It will smoke; open a window and resign yourself to it. The surface should come out distinctly darker than it went in.
- Repeat the oil-and-bake three or four times until the pan is nearly pitch black.
A note for the chemistry enthusiasts and the flaxseed evangelists: flaxseed oil is a “drying oil” and cures into a beautifully hard, glassy coat, which is why the internet fell in love with it. The complication is that flaxseed seasoning, built up too thick or too fast, has a well-documented tendency to become brittle and flake off in sheets – which rather defeats the purpose. If you use it, keep the layers absurdly thin and your expectations modest. Honestly, for a first pan, a boring bottle of vegetable oil and regular cooking will serve you better than chasing the perfect cure.
The One Mistake That Makes Every Pan Worse
Here is the section that will save your dinners, and it has nothing to do with seasoning at all.
Chris Young – co-author of Modernist Cuisine, founder of ChefSteps and Combustion – once spent an unreasonable amount of money on a $4,000 sterling silver frying pan and then tested it against everything else in the cupboard to settle, scientifically, which metal makes the best pan. The headline finding is humbling for anyone who has ever paid a premium for cookware: “what’s underneath the pan matters as much or more than the pan itself.”
The relevant truth for us iron-lovers is this. Iron is a genuinely poor conductor of heat. Both carbon steel and cast iron sit near the bottom of Young’s “diffusivity” rankings – a measure of how well a metal spreads heat – at roughly a sixth of aluminium’s ability. What this means in your kitchen is that an iron pan does not heat evenly. Put a wide pan on a small burner and you get, in Young’s vivid phrase, “a burned bullseye in the middle that fades fast towards the edges,” with the surface temperature swinging by over a hundred degrees from edge to centre. The infamous “first pancake that never works” is your pan confessing exactly this. Kenji measured the same thing independently: cast iron’s thermal conductivity is around a third to a quarter that of aluminium, so “throw a cast iron skillet on a burner and you end up forming very clear hot spots right on top of where the flames are.”
The fix is gloriously simple and free. Match the burner to the pan. For low-conductivity metals like iron, Young’s rule of thumb is to use a burner at least 90% of the pan’s diameter, so the heat travels mostly straight up into the food rather than having to crawl sideways through sluggish metal. Pair that with a proper preheat – a full 5 to 10 minutes for cast iron, rotating it occasionally – and the hot spots largely vanish. Cook your 12-inch pan on a thumbnail-sized burner and no amount of seasoning will save you.
What iron is superb at is holding heat once it gets there. Young measured a stout cast iron pan storing around 135,000 joules of heat energy, far more than aluminium. That enormous thermal reservoir is why a cast iron pan barely flinches when you drop a cold steak onto it, and why it sears like nothing else. As Young drily concedes even after defecting to fancier pans, carbon steel’s “self-healing semi non-stick patina” remains “unbeatable” for a classic French omelette. Even the man with the $4,000 silver pan keeps a seasoned one on the hob.
Strata’s carbon-steel-clad pan with an aluminium core – the compromise Young himself landed on.
Everyday Care: Soap, Water, and Other Heresies
Now that you understand seasoning is bonded glass and not a sulking grease-spirit, daily care becomes almost insultingly easy. Here are the only rules that matter, and the myths they put out of their misery.
Yes, you can use soap. This is the big one, the hill people die on at family gatherings. The no-soap rule is a genuine antique: it dates from the era when soap was made with caustic lye, which really would strip seasoning. Modern dish soap is not lye. As Kenji says of his own well-seasoned pans, washed with soap for years, they are “still well-seasoned and completely nonstick.” Soap it, scrub it with a sponge, get on with your life.
No, you cannot leave it to soak. Water is the one true enemy of iron. A pan left wet in the sink, or air-dried and put away damp, will grow rust spots. So the rule is: wash promptly, then dry thoroughly. The professional move is to set the clean pan back on a warm burner for a minute to drive off every trace of moisture, then wipe a tiny amount of oil over the surface before it goes away.
Metal utensils are fine. The seasoning is chemically bonded to the metal, not laid on top like cling film. Scrape away with a metal spatula; short of actually gouging the iron, you will not hurt it. If you ever see black flakes in your food, they are almost certainly carbonized bits of old food, not seasoning – usually a sign you have been too gentle with the cleaning, not too rough.
Go easy on acid, at least early on. A pan with a thin, young seasoning has patches of bare metal, and long-simmered acidic things – tomato sauce, wine reductions left to bubble for an hour – can eat into them, picking up a metallic, dingy flavour. A quick deglaze with a splash of wine is completely fine. A two-hour ragu in a barely-seasoned pan is asking for trouble. Once the seasoning is mature and black, even this relaxes.
Never the dishwasher. Obviously. We should not have to say it. We are saying it.
Rust and “scaling” are not disasters. A rust spot wipes back with a scrub, a dry, a heat, and a re-oil; a few cooks later you would never know. “Scaling” – seasoning flaking off in large sheets – only happens if you bake the pan repeatedly without re-oiling, and the cure is simply to strip it back and re-season from scratch. There is essentially nothing you can do to one of these pans that a bit of oil and heat cannot undo. Try doing that to your nonstick.
What to Actually Buy
You do not need to spend a fortune. In fact, spending a fortune is, for the most part, the rookie move. Here is the honest landscape.
Lancaster lightweight cast iron: machined smooth, around 4 lbs, made in the USA.
Carbon steel. Look for a pan at least 2mm thick (around 14-gauge) so it does not warp or feel flimsy, with a metal handle that is safe to put in the oven.
- De Buyer Mineral B – the French classic, 3mm of serious steel, deep and weighty. Remember the beeswax coating that needs melting off first.
- Matfer Bourgeat – a single piece of steel with no rivets to work loose, beloved of professional kitchens, and (the part that matters for this whole article) explicitly free of PTFE, PFOA and any coating whatsoever.
- Mauviel M’Steel – another French heavyweight, extra-thick black steel built for long preheats and brutal sears.
- The clad cheat code: Strata. If the uneven-heating thing genuinely bothers you, a carbon-steel-clad pan – a carbon steel cooking surface bonded over an aluminium core – gives you the seasonable iron surface with the even heat of aluminium. It is, not coincidentally, exactly the compromise Chris Young landed on. Lighter, too.
Cast iron. The great democratic truth here is that cheap cast iron is genuinely as good as expensive cast iron for the actual cooking.
- Lodge – around $25, indestructible, pre-seasoned, and the pan Kenji and most of the testing world keep recommending as the sensible default. “A steal for a product that will last you a lifetime.”
- Lighter, smoother, pricier options – Lancaster, Stargazer, Smithey, and Field Company machine their surfaces smooth and shave off some weight, which your wrists will appreciate. You are paying for finish and feel, not for better food.
- Vintage – a pre-1950s Griswold or Wagner from a flea market, with its factory-polished satiny surface, is a genuine prize if you find one cheap. Just do not pay collector prices when a new Lodge will sear an identical steak.
One last practical note: both materials work on induction. Iron is ferromagnetic, so unlike copper or aluminium, your seasoned pans will happily talk to a modern induction hob. The buy-it-for-life pan also happens to be the future-proof one.
The Pans We Rate
We have put real time into the pans below and we stand behind every one of them. Whichever you pick, the deal is the same: a little oil, a little heat, a little patience, and a pan that will still be searing your steaks long after the nonstick you almost bought instead has been quietly carried out to the bins.
The carbon steel pans
de Buyer Mineral B – Best Carbon Steel All-Rounder
The pan we point most people at first. Heavy enough to sear properly, light enough to lift, French enough to feel smug about. Just do not forget to scrub the beeswax off before you start, or your first seasoning session will smell like a candle shop.
de Buyer Mineral B Carbon Steel Fry Pan, 12.5-Inch
- 3mm carbon steel, 12.5-inch pan with a 9-inch cooking surface; made in France
- Ships under a beeswax anti-rust coating you scrub off before seasoning
- Lighter and more heat-responsive than cast iron; oven-safe and induction-ready
Matfer Bourgeat – Best for the No-Chemicals Purist
If the entire point, for you, is escaping coatings and acronyms, this is the pan. One single piece of carbon steel, no rivets, no PTFE, no PFOA, nothing – the favourite of more professional kitchens than anyone has bothered to count, and usually a little cheaper than the de Buyer.
Matfer Bourgeat Black Carbon Steel Frying Pan, 9 3/8-Inch
- Single piece of high-carbon steel, free of PTFE, PFOA and any coating
- Handle welded to the body – no rivets to trap grease or work loose
- Works on every hob including induction; oven-safe; made in France
Mauviel M’Steel – Best for Hard Searing
Extra-thick black steel for people whose chief complaint about other pans is that they cool down when you have the temerity to put food in them. Long preheats, big sears, a riveted iron handle that will outlast your tenancy.
Mauviel M'Steel Black Carbon Steel Frying Pan, 9.4-Inch
- Extra-thick black carbon steel with a riveted iron handle; made in France
- Built for long preheats and serious searing; commercial-grade durability
- Ships with a beeswax coating; season before first use; induction-ready
Strata Carbon Steel Clad – Best for Even Heating
The clever one. A carbon steel cooking surface bonded over an aluminium core, so you get the seasonable, plastic-free iron surface and the even heat that bare iron simply cannot manage. It is the pan Chris Young defected to after testing everything up to and including solid silver. Also gratifyingly light.
Strata Carbon Steel Clad 3-Ply Frying Pan, 10.5-Inch
- 3-ply construction: carbon steel cooking surface bonded to an aluminium core
- Aluminium core spreads heat evenly and kills the hot spots bare iron is prone to
- 10.5-inch and just 2.4 lbs; metal-utensil safe and endlessly re-seasonable
The cast iron pans
Lodge 12-Inch Skillet – Best Value, Full Stop
The default recommendation, and not in a damning-with-faint-praise way. About thirty-five dollars buys you a pre-seasoned, PFAS-free slab of American iron that will sear, bake, fry and very probably outlive everyone reading this. Spending more buys you a lighter, smoother pan – not a better-cooking one.
Lodge Seasoned Cast Iron Skillet, 12-Inch
- Pre-seasoned cast iron, made in the USA; PFAS-free
- 12-inch; safe on the stove, in the oven, on the grill and over a campfire
- Includes a silicone hot-handle holder; effectively indestructible
Lodge 8-Inch Skillet – Best Cheap Way In
Under twenty dollars. If you are not yet convinced, this is the lowest-stakes possible entry into a lifelong habit: a little pan for eggs, cornbread, a single grilled cheese, or the toasting of nuts and spices. Buy it, cook in it for a month, and let it make the argument for you.
Lodge Seasoned Cast Iron Skillet, 8-Inch
- Small 8-inch pre-seasoned cast iron, made in the USA
- Ideal for eggs, cornbread, toasting spices and one-pan sides
- Oven, stovetop, grill and campfire safe; the cheapest route to buy-it-for-life iron
Lancaster No. 8 – Best Lightweight Cast Iron
For people who love cast iron but have made their peace with the fact that their wrists do not. Cast, machined and seasoned in Pennsylvania to a smooth, vintage-style finish, and a good pound-and-a-bit lighter than the Lodge it otherwise resembles.
Lancaster No. 8 Lightweight Cast Iron Skillet, 10.5-Inch
- Cast, machined and seasoned in the USA; pre-seasoned and ready to cook
- Machined-smooth surface in the style of vintage Griswold and Wagner pans
- 10.5-inch at around 4 lbs – noticeably lighter than standard cast iron
Stargazer 12-Inch Skillet – Best Premium Cast Iron
The splurge that is actually defensible. A machined-smooth American skillet with a clever drip-free rim, no pour spouts to interrupt the line, and a lifetime warranty that suggests the makers have done the maths on how long this thing lasts (answer: longer than the warranty department).
Stargazer Cast Iron Skillet, 12-Inch
- Machined-smooth, pre-seasoned cooking surface; made in the USA
- Drip-free flared rim pours cleanly from any angle, no pour spouts needed
- 12-inch with excellent heat retention; backed by a lifetime warranty
One Last Thing
The nonstick pan asks nothing of you and gives you, in return, about three years and a slow drizzle of fluoropolymer. The seasoned pan asks for ten minutes of attention up front and a habit of drying it properly, and gives you, in return, the rest of your life. Put like that, it is not really a close call. Go and buy the bare metal. Cook something fatty in it tonight. In a month you will not understand how you ever tolerated anything else – and that smug, blackened, faintly heroic pan will be entirely your own doing.
Photo by Comstock on FreeImages
