Yes, you should wash your cast iron pan after every use to remove food debris, fats, and bacteria. Contrary to popular myth, a well-seasoned pan is highly resilient, and washing it correctly won't strip away its protective, non-stick coating.
For individuals with diagnosed iron deficiency or anemia, cast iron cooking alone is not going to provide enough iron, and additional dietary modifications or iron supplements may be necessary." It's also worth noting what type of iron you'll absorb from employing this material in the kitchen.
Yes, Dawn dish soap is perfectly safe for a well-seasoned cast iron skillet. Modern mild dish soaps are gentle enough to remove food debris and grease without stripping the pan's polymerized non-stick coating (seasoning).
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.
Mistake 3: Soaking the Pan in Water
Cast iron rusts when exposed to moisture for long periods. A water soak can undo months of seasoning and require a full restoration. Wash quickly with warm water and a soft brush while the pan is still warm. Dry it immediately on low heat until all moisture evaporates.
No, do not let cast iron pans sit in water, and do not leave water sitting in a pan. This will likely lead to rusting. Instead, make sure you clean, wash, and immediately dry all cast iron pans.
Any food-safe cooking oil or shortening will work, but our Test Kitchen experts prefer vegetable oil or canola oil. WHAT'S THIS DARK RESIDUE I SEE WHEN I CLEAN MY CAST IRON? Occasionally, you may notice some dark residue on your paper towel or cloth while cleaning it.
Avoid cooking highly acidic foods, delicate fish, strong-smelling dishes, and sticky foods (like eggs) in cast iron. These can strip your pan’s seasoning, leach metallic flavors into your food, or leave behind lingering odors.
Cast iron skillets can last a lifetime—and even last for generations when cared for properly. Because they are built from a single, durable piece of metal, they do not wear out like traditional non-stick pans. Even if a pan develops rust or loses its seasoning, it can almost always be stripped down and restored.
Oil Residue & Splotchy Seasoning
How do you fix a badly seasoned cast iron pan? If you see some raised, splotchy residue on your skillet, which often looks like a spiderweb or spotted pattern, this is most likely some oil residue.
No, it is not bad. Modern, mild dish soaps are completely safe to use. The old "no soap" rule comes from decades ago when soaps contained harsh lye, which stripped the skillet's seasoning. Today's gentle dish soaps simply cut through grease without harming the baked-on, nonstick layer.
The easiest way to clean a cast iron skillet is to wash it while it's still warm using hot water, a mild dish soap, and a scrub sponge. Dry it completely on the stovetop, then rub a very thin layer of neutral cooking oil over the entire surface before storing.
Because Dawn Powerwash contains grease-cutting solvents and alcohol, it is too harsh for delicate, porous, or treated surfaces. As a rule of thumb, do not use it on anything you wouldn't clean with rubbing alcohol.
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.
When it comes to natural, everyday beverages, prune juice has the most iron, delivering about 3 mg (roughly 17% of your daily value) per 8-ounce cup.
One serving of eggs (2x 60g eggs) provides 1.7mg of iron, which represents 14% of the Recommended Dietary Intake (RDI) for adults and 17.5% for children aged 9-13 years.
The best cast iron skillet depends on your budget and maintenance preferences. For raw cast iron, Lodge is the undisputed best value, while boutique brands like Field Company and Smithey offer premium, smooth-surface alternatives. If you want a non-stick option without seasoning, Le Creuset is the premium enameled choice.
Cast Iron Cons
Unfortunately, iron is prone to rusting and long-term effects will harm the material. Frequent exposure to moisture will only accelerate the process. Cast iron is a very heavy material which makes working with it very difficult.
The healthiest pans to cook with are made from cast iron, carbon steel, stainless steel, or pure ceramic. These materials are free from toxic synthetic coatings (like PFAS and Teflon) and will not leach harmful chemicals or microplastics into your food when heated.
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.
It is not inherently bad to cook tomato sauce in cast iron, but it requires careful management. Because tomatoes are highly acidic, prolonged simmering or storing can strip your pan’s seasoning and cause iron to leach into your food, leaving a metallic taste.
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.
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.
Use plain white distilled vinegar (around 5% acidity). It is the best and most affordable choice because the acetic acid quickly breaks down and dissolves rust.