When seasoning cast iron, avoid applying too much oil, as it creates a sticky, gummy layer. Never use oils with low smoke points (like olive oil, butter, or flaxseed), and always bake the pan at a temperature slightly higher than the oil's smoke point for proper bonding.
If you're just swiping a layer of oil onto the surface of your skillet, you're not seasoning your cast iron correctly. Seasoning involves a chemical reaction made possible through heat.
Instead, Amidor recommends “cooking with cast iron once or twice a week, especially if someone has iron-deficiency anemia and no issues with too much iron in their diet.” Preparing a more acidic dish, or something with a lot of moisture, is likely to absorb more iron from your pot or pan.
Put the oiled pan in a preheated 450°F (230°C) oven, and leave it there for 30 minutes. It may get a little smoky, so keep your kitchen well ventilated. It's during this time that the oil will polymerize and form the first of several hard, plastic-like coatings you'll be laying down.
Why is my cast iron seasoning flaking or peeling? You've stripped away some seasoning, likely from cooking acidic foods (tomatoes, vinegar, citrus) for too long, or from aggressive scrubbing.
Yes, you can absolutely use Dawn dish soap on cast iron.
4 Foods You Should Avoid Cooking In A Cast-Iron Skillet
All you have to do after you purchase your cast iron is rinse, hand dry, and start cooking! We don't recommend using beef tallow, lard, or ghee to season your skillet because it can go rancid.
Oven seasoning is optional; if you do it, use grapeseed or sunflower oil (avoid flaxseed), start at 200°F, increase to 400°F for one hour, and wipe away excess oil until the pan has a dry, matte finish.
You can use olive oil to season cast iron, but you need to choose a high quality extra virgin olive oil, which should have a smoke point close to 400 degrees Fahrenheit.
Iron deficiency occurs when your body lacks enough iron to produce hemoglobin, a protein in red blood cells that carries oxygen from your lungs throughout your body. When oxygen levels drop, you can experience a variety of physical and mental symptoms.
Cast iron cookware is highly durable and heat-retentive, but it requires diligent maintenance, is physically heavy, and reacts poorly to acidic foods and prolonged liquid simmering. It also heats unevenly and is unsuitable for dishwashers.
Yes, you can absolutely use a small amount of mild dish soap on a well-seasoned cast-iron pan. The old "no soap" rule is a myth from generations ago when soaps contained harsh lye, which stripped the pan's protective seasoning. Modern dish soaps are gentle and safe to use.
Yes, you can use PAM on cast iron. It is fine for cooking and post-wash maintenance, but its chemical additives can interfere with the curing process, so it should not be used to build a new seasoning layer. Always wipe away the excess completely after spraying.
For a brand-new or stripped pan, you should apply 3 to 4 initial layers of seasoning. This creates a solid, rust-resistant, and non-stick base. However, the ultimate cooking surface builds itself over time with regular use.
A cast iron skillet is ruined primarily by rust from soaking or improper drying, warping from extreme thermal shock (like cold water on a hot pan), or cracking if dropped. While most seasoning issues are reversible, letting rust cause deep pitting, or fracturing the iron, destroys the cookware permanently.
Yes, you can season cast iron at 𝟑𝟓𝟎∘𝐅 (𝟏𝟕𝟓∘𝐂) for one hour, especially when using vegetable shortening (like Crisco), as this is a common and effective method. While lower, this temperature still allows oils to polymerize and create a non-stick surface, particularly if you repeat the process 3–4 times for a durable finish.
The best oil for seasoning cast iron is one that is refined, neutral, and has a high smoke point (above 400∘F400 raised to the composed with power F400∘F / 204∘C204 raised to the composed with power C204∘C). Top choices include grapeseed oil, avocado oil, and canola oil. These oils polymerize effectively into a durable, non-stick layer without leaving a sticky residue.
What Not to Cook in a Cast-Iron Skillet
Yes, you can absolutely use Dawn dish soap on cast iron.
Olive oil, particularly light olive oil, can season cast iron fairly well. It has a smoke point of around 375°F and contains a mix of monounsaturated and polyunsaturated fats.
Mastering cast iron comes down to a few core habits: proper preheating, generous fat usage, and immediate post-cook cleaning. Follow these core principles for a perfectly seasoned, non-stick cooking experience:
The healthiest skillet to use is one free from toxic coatings like Teflon (PTFE) and harmful forever chemicals (PFAS/PFOA). Cast iron, carbon steel, and stainless steel are universally regarded as the safest, longest-lasting options, while ceramic-coated pans provide an easy-release alternative without the plastics.
Yes, bare (unenameled) cast iron leaches dietary iron into your food. While this is usually a harmless or beneficial boost, the amount varies based on the food’s acidity, cooking time, and the pan's seasoning.