Stainless steel vs nonstick cookware

Stainless steel is not inert, and pretending otherwise would be the mirror image of the mistake coated-pan marketing makes. Kamerud, Hobbie and Anderson measured nickel and chromium migrating into tomato sauce during cooking, with the amounts rising with cooking time and falling as a pan aged — new pans released more than well-used ones.

The practical reading: for most people the quantities are small against dietary intake from food itself, and the first several uses of a brand-new pan are when transfer is highest. For someone with a diagnosed nickel allergy it is a real consideration, and the alternatives are enameled cast iron, glass or solid ceramic rather than a coated pan. Stainless steel cookware sets out the full evidence.

For PTFE-based coatings, two things are true at once: an intact coating at normal cooking temperatures is not understood to transfer meaningfully into food, and the coating is a fluoropolymer from a chemical class EPA documents for persistence and health endpoints, with FDA having withdrawn a set of PFAS food contact authorizations. The exposure route people actually encounter is heat — coatings degrade above roughly 500F, which is the scenario covered in when to replace a non-stick pan.

Ceramic coatings are a different chemistry — a sol-gel mineral layer, no PTFE — but they are still an applied surface that wears. So the choice between ceramic and PTFE is a chemistry question, and the choice between coated and uncoated is a durability question. They are not the same question, and conflating them is how people end up buying a coated pan every two years in the belief that they are solving something.

Two clad stainless pieces and one coated pan, used for different jobs. The stainless does searing, braising, pan sauces, anything acidic, anything that goes in the oven. The coated pan does eggs, fish and pancakes on medium heat and never sees a sear. Split that way the coated pan lasts years rather than months, and nothing you cook daily is sitting on a surface with a service life.

If you would rather own no coating at all, the honest substitute for the egg pan is seasoned carbon steel — see carbon steel vs cast iron — which releases eggs as well once established and never needs replacing. It just asks for the seasoning habit in exchange.