We have written extensively about forged iron skillets at Severe Eats, masking subjects resembling how one can season them, how one can clear them, and how one can revive them from the useless. There are infinite debates about which oil to make use of, whether or not cleaning soap is buddy or foe, and what number of rounds of seasoning a brand new pan actually wants. I’ve edited a whole cookbook on the subject, and I do know the discourse properly. However to be trustworthy, none of it issues a lot in the event you’re not utilizing your skillet correctly.

And utilizing it correctly begins with one often-overlooked however easy step: totally preheating it. Seasoning issues, nevertheless it would not do you any good if the pan is just half sizzling if you throw in your eggs or hen thighs. In my expertise, virtually each “forged iron failure” story (meals sticking, pale sear, uneven browning) will be traced again to a chilly or erratically heated pan.

You won’t see this step written into each forged iron recipe on Severe Eats (even a few of our hottest ones), however take into account this your invitation so as to add it anyway. It is a foundational behavior, one small change that may yield noticeably higher outcomes when utilized to the recipes you already prepare dinner.

What Solid Iron Is (And Is not)

Forged iron cookware is extremely dense and thick, and it’s glorious at retaining warmth. As soon as it is sizzling, it stays sizzling, and that is a significant benefit if you need a deep, even sear or constant baking.

However getting it to be evenly sizzling is one other story. Forged iron is a poor conductor of warmth. Meaning warmth would not unfold shortly or evenly throughout its floor. That sluggish warmth move is the worth you pay for forged iron’s legendary warmth retention.

As Dave Arnold put it in his piece on the science of forged iron cooking, the thermal conductivity of forged iron is about one-fifth that of aluminum. Place a 12-inch forged iron skillet on a small burner and wait a minute or two, and you will have a blazing sizzling heart with a cool outer rim. Add a steak to that pan, and the half touching the new heart will brown superbly whereas the remaining sweats and steams.

Why Preheating Issues

The answer to making sure even browning is fairly easy: Give your skillet the time it must preheat correctly, permitting the complete cooking floor, not simply the world immediately over the flame, to achieve an evenly high temperature. Meaning extra even cooking and higher browning, particularly essential for methods like pan-searing, sautéeing, or shallow-frying.

It additionally makes the pan functionally extra nonstick. Seasoning solely does its job if the meals hits the pan that is sizzling sufficient to set the floor proteins earlier than they’ve an opportunity to bond with the cookware itself. If the pan is chilly or erratically heated, proteins have a a lot greater likelihood of bonding with the floor and clinging for expensive life; this will even occur in a well-seasoned pan.

Find out how to Preheat Your Skillet

Preheating is not sophisticated, nevertheless it does require a little bit of persistence and a focus. The very best method is to warmth the pan whereas empty, with out oil. Including oil too early could cause it to interrupt down or burn earlier than the skillet is totally heated. Heating the pan dry permits the skillet to heat evenly and totally, setting the stage for a clear, well-controlled sear.

• To preheat over a burner: Set your forged iron skillet over medium warmth, ideally on a burner that is roughly the identical dimension or bigger than the pan’s base. In case your burner is smaller than the pan, rotate the skillet a couple of occasions throughout preheating to assist even out sizzling spots. Give it 3 to five minutes to come back as much as temperature. Then, and solely then, add the oil and let it warmth till it shimmers or simply begins to smoke. In case you’re aiming for a particular temperature, use an infrared thermometer to learn the floor immediately. For gentler cooking duties, resembling sautéing onions or frying eggs, a floor temperature of round 400°F is often enough. For prime-heat jobs like searing a steak or pork chop, let the pan attain a temperature nearer to 500°F.
• To preheat within the oven: Once you want a ripping-hot skillet to place a correct sear on steaks or chops, I like to recommend utilizing the oven, which might warmth the pan evenly whereas additionally making it exceptionally sizzling. Place the empty forged iron skillet in a chilly oven, then flip the oven to 500°F. As soon as it reaches the specified temperature, rigorously take away the skillet utilizing oven mitts or a thick kitchen towel (it is going to be blisteringly sizzling, so guarantee that towel is not even the slightest bit damp).

  Set the skillet over excessive warmth on the stovetop, add oil, and anticipate it to smoke (which ought to occur virtually instantly). Then, proceed with cooking. This ensures the complete pan is evenly heated and capable of create a correct sear as quickly because the meals hits the floor.

Frequent Errors and Find out how to Keep away from Them

Even seasoned forged iron customers (pun semi-intended) can run into issues if they are not paying consideration to some key particulars. This is what to be careful for:

1. Heating Too Quick: Cranking a burner’s warmth too excessive may look like a shortcut, however blasting a chilly forged iron skillet can result in uneven heating and sizzling spots. The pan’s poor conductivity means it will not distribute that sudden warmth evenly, and you will get a scorched heart and funky edges. Follow medium warmth and provides it time.

2. Including Oil Too Early: Pouring oil into a chilly skillet is without doubt one of the most typical missteps. Because the pan warms, the oil can smoke prematurely earlier than the complete floor is evenly heated, or polymerize erratically. All the time warmth the pan dry, then add oil as soon as it is preheated.

3. Underestimating the Preheat: Three minutes may sound like a very long time if you’re hungry, however skipping or speeding the preheating step is the quickest option to break a meal (your onions, steaks, and eggs will thanks). A half-hot skillet will not brown correctly, and it actually will not forestall sticking. 

4. Utilizing the Unsuitable Burner: An enormous skillet over a tiny burner means you are solely heating a fraction of the cooking floor. In case you can, use a burner that matches the dimensions of your pan. If not, rotate the pan throughout preheating to advertise extra even warmth distribution.

The Takeaway

Folks are inclined to deal with forged iron upkeep like a sacred ritual, however good cooking comes all the way down to good method. A dozen layers of polymerized flaxseed oil will not matter in case your pan is chilly and erratically heated. It’s essential give it time to get sizzling—like, actually sizzling—earlier than you begin cooking.

Preheating is a key option to rework forged iron from a irritating, sticky mess into the powerhouse it is alleged to be. It is the distinction between pale hen and a shatteringly crisp pores and skin, between scrambled eggs that cling and fried eggs that slide out clear.

So by all means, season your pan, wash it gently, and oil it after each use. However simply as importantly, warmth it correctly.

July, 2025