Safer Cookware Guide: Stainless vs Cast Iron vs Ceramic (What Actually Matters)

Cookware is one of the biggest sources of chemical exposure in your kitchen. Here is what to use (and what to toss).

We cooked with non-stick pans for years without thinking twice. Then we learned about PFAS ("forever chemicals") and realized every meal was coming with a side of coating particles.

Here is the honest breakdown of what is safe and what is not—without the panic.

The problem with non-stick

Traditional non-stick coatings (Teflon, PTFE) release toxic fumes when overheated (above 260°C or 500°F—which is easy to hit on high heat). PFAS used in production are linked to cancer, thyroid disease, and immune problems.

Worse: PFAS never break down. They accumulate in your body and the environment forever. Hence the nickname "forever chemicals."

Throw out immediately:

Any scratched or peeling non-stick pan. You are literally eating coating flakes with every meal.

Safest options

Stainless Steel

Pros:

Durable (lasts decades), non-reactive (will not leach metals into food), dishwasher-safe, oven-safe.

Cons:

Food sticks unless you preheat properly and use enough fat (butter, oil).

Our pick:

Look for 18 slash 10 stainless steel (18 percent chromium, 10 percent nickel). Brands: All-Clad (expensive but lifetime warranty), Scanpan Impact, Essteele (Australian, solid quality).

Cooking tip: Preheat the pan on medium, add fat, wait until it shimmers, then add food. It will release when it is ready. Patience is key.

Cast Iron

Pros:

Naturally non-stick when properly seasoned, lasts literally forever (we use a pan from the 1950s), adds trace iron to food (bonus for people with low iron).

Cons:

Heavy (not great for tossing food), needs regular seasoning, reactive with acidic foods (tomatoes, vinegar can strip seasoning).

Our pick:

Lodge (affordable, pre-seasoned), or Le Creuset enameled cast iron (splurge-worthy, handles acidic foods).

We use bare cast iron for searing and frying, enameled for tomato-based sauces and braises.

Ceramic-Coated

Pros:

Non-stick without PTFE or PFAS, lightweight, comes in nice colors.

Cons:

Coating degrades over time (expect 1–3 years of good performance, then it starts sticking).

Our pick:

GreenPan, Caraway. Just know you will need to replace them every few years.

We keep one ceramic pan for eggs and use stainless or cast iron for everything else.

What to avoid

• Uncoated aluminum —can leach into acidic foods (tomatoes, citrus)
• Unlined copper —beautiful but reactive; only buy if lined with stainless
• Cheap non-stick from discount stores —unregulated coatings, unknown chemicals

If a pan costs less than twenty dollars and claims to be non-stick, it is probably coated with something you do not want in your food.