The Case for Cooking with Cast Iron

There is a certain type of home cook who will not shut up about cast iron. They season their pan like it is a spiritual practice, they lecture you about never using soap, and they treat their skillet like a family heirloom even though they bought it at Target three years ago.

I get why it is annoying. But here is the thing: those people are mostly right. Not about the soap thing, which is a myth we will get to. But about cast iron being genuinely great. A well-maintained cast iron skillet is one of the most useful, versatile, and cost-effective pieces of cookware you can own.

Why Cast Iron Works So Well

Cast iron is dense and heavy, which means it holds heat like nothing else. Once it is hot, it stays hot. When you drop a cold steak onto a cast iron pan, the temperature barely flinches. A thin stainless steel pan loses a lot of heat on contact, which means less searing and more steaming.

This thermal mass is what gives you that deep, even crust on proteins. It is why cast iron pancakes have that perfectly uniform golden brown surface. It is why cornbread baked in a cast iron skillet gets that crunchy, buttery edge that a glass baking dish cannot replicate.

Cast iron also goes from stovetop to oven seamlessly. You can sear chicken thighs on the burner, then transfer the whole pan to the oven to finish cooking. Try that with a pan that has a plastic handle.

And unlike nonstick pans, which start degrading the moment you buy them, cast iron gets better over time. The more you cook with it, the more seasoned it becomes, and the more naturally nonstick it gets. A 50-year-old cast iron skillet is better than a brand new one.

The Soap Myth

Let us get this out of the way: you can use soap on cast iron. Modern dish soap is not the same as the harsh lye-based soap your grandmother used. Today's dish soap is mild enough that it will not strip your seasoning. Use a small amount, scrub gently, rinse, and dry immediately.

The people who insist you should never use soap are operating on outdated information. If your seasoning is so fragile that a drop of Dawn destroys it, your seasoning was not good to begin with.

That said, most of the time you do not even need soap. After cooking, rinse the pan under hot water while it is still warm, scrub with a stiff brush or chain mail scrubber, and wipe it dry. For stuck-on food, pour in some coarse salt and a splash of oil, scrub with a paper towel, and rinse. Done.

How to Season Cast Iron (Without Overthinking It)

Seasoning is just a thin layer of polymerized oil baked onto the surface. It fills in the microscopic pores of the iron and creates a smooth, nonstick coating. Every time you cook with oil in your cast iron, you are adding to this seasoning.

For initial seasoning or to restore a neglected pan:

Wash the pan with warm soapy water and dry it completely. Apply a very thin layer of a neutral oil like vegetable oil, flaxseed oil, or Crisco to the entire pan, inside and out, including the handle. Then wipe off as much oil as you can with a clean paper towel. You want a barely-there film, not a visible coating.

Place the pan upside down in a cold oven. Set the oven to 450 degrees F and let it heat up with the pan inside. Bake for one hour, then turn off the oven and let the pan cool completely inside. That is one round of seasoning. Two or three rounds will give you a solid base.

The most important part is wiping off the excess oil before baking. If you leave too much oil on the surface, it pools and gets sticky instead of polymerizing into a smooth layer. Less is more.

What to Cook in Cast Iron

Cast iron excels at anything that benefits from high heat and a good sear. Steaks, pork chops, chicken thighs, burgers, and fish fillets all come out better in cast iron than in most other pans.

It is also fantastic for baking. Cornbread, Dutch baby pancakes, skillet cookies, deep dish pizza, and upside-down cakes all benefit from the even heat distribution and the crispy edges that only cast iron delivers.

Eggs are where people get nervous, but a well-seasoned cast iron pan handles eggs beautifully. The key is preheating the pan over low heat for a full 3 to 5 minutes, then adding butter or oil before the eggs go in. If your eggs stick, your pan is either not seasoned well enough or not preheated enough. Usually it is the preheating.

What Not to Cook in Cast Iron

Acidic foods like tomato sauce, wine-based sauces, and citrus-heavy dishes can react with the iron if they simmer for a long time. A quick deglaze with wine is fine. Simmering marinara for an hour is not ideal because the acid can break down the seasoning and give the food a metallic taste.

Delicate fish fillets that flake apart easily are also better in a nonstick pan. A well-seasoned cast iron can handle salmon, but a thin sole fillet is going to give you trouble.

Buying Guide

You do not need to spend a lot. A Lodge 12-inch cast iron skillet costs around 25 to 35 dollars and will outlast every other pan in your kitchen. It comes pre-seasoned and ready to use. The surface will not be glass-smooth like a vintage Griswold, but after a few months of regular cooking, it will be slick enough for eggs.

If you want to spend more, brands like Butter Pat, Finex, and Smithey make beautiful cast iron with machined-smooth cooking surfaces. They are nice, but they are not necessary. The $30 Lodge does the same job.

Avoid cast iron sets. You really only need one pan. A 12-inch skillet handles 90% of what you will ever cook. If you find yourself wanting a second piece later, a 10-inch skillet or a cast iron Dutch oven are good additions.

The Bottom Line

Cast iron is cheap, versatile, nearly indestructible, and improves with use. It sears better than stainless steel, lasts longer than nonstick, and goes from stovetop to oven without a second thought. Take care of it with minimal effort and it will take care of you for decades.

Stop overthinking it. Buy one, cook with it, and wipe it down after. That is the whole secret.