The Cause: If you accidentally leave your cast iron cookware on any heat source for too long, food, marinades, and sauces can burn and get stuck to the surface.
When selecting a seasoning oil, you want one that's high in polyunsaturated fats and has a high ratio of polyunsaturated fat to monounsaturated fat. Among common cooking oils, grapeseed oil and sunflower oil stand out for their high polyunsaturated fat content and desirable ratio of polyunsaturated to saturated fat.
Cast iron pans can take a lot of abuse, but if an extremely hot pan in put into cold water it can crack the casting. IF the pan is heated quickly on high heat it may warp the bottom in some cases. Leaving the pan in storage where it gets wet & can't dry out may cause it to rust & pit badly.
Extreme temperatures and rapid temperature changes can cause thermal shock which can cause your cast iron to warp or crack. Avoid using self clean mode or throwing your cast iron in a fire to try and restore them.
The Cause: If you accidentally leave your cast iron cookware on any heat source for too long, food, marinades, and sauces can burn and get stuck to the surface.
That's why our simple cleaning steps have you rub oil into your pan after each use to ensure the seasoning remains for quality cooking. You can also season your cast iron cookware in the oven. This method adds a more thorough layer of seasoning onto the entire pan, strengthening the bond to the iron.
Eggs fall into the category of sticky foods that are not ideal for cast iron skillets that haven't built up their seasoning yet. While cast iron can become non-stick with sufficient use over time, a newer skillet will almost certainly cause your eggs to stick to its porous surface.
Cracks also harbor bacteria because they're more difficult to clean. Cooking with cracked cast iron pans increases the risk of bacteria and iron particles leaching into your food. Rather than take that risk, replace your pans when they start cracking.
Bake your cookware upside down at 450 degrees Fahrenheit in the oven for one hour. Allow the pan to cool down completely, and repeat three more times.
Oil, especially canola oil (bad, unhealthy oil), should not be used. If a quick oiling (not seasoning) in between is desired, it's best to use a high temperature oil like avocado. A quick rub can do the trick, if your pan looks a bit dry. I have one pan that is about 100 years old!
When using carbon-steel and cast-iron pans, some people like to heat the dry pan first, then add the oil. This is because high heat causes the oil to oxidize and polymerize, allowing it to bond to the metal, filling in any small pits and divots—a process that seasons the pan, essentially giving it a nonstick surface.
Use baking soda or salt to scrub away stuck-on burnt food. Give the cast iron a light rinse to remove any leftover salt or baking soda. Alternatively, add a little water to the baking soda to form a paste. Scrub the burnt area with the paste and a stiff brush.
Bar Keeper's Friend or baking soda will take care of any stubborn spots, and when you're done cleaning: just dry off and put it away. No seasoning required.
All cast iron, whether natural or coated, has a much higher carbon concentration than other popular food-safe metals like stainless steel and aluminum. This means that natural cast iron is more susceptible to corrosion because when carbon combines with oxygen and water, rust forms.
With proper care cast iron cookware can withstand a lifetime of use. Actually several lifetimes as these cast iron pans and dutch ovens are often passed down from generation to generation. Taking care of cast iron cookware is as easy as 1 – 2 – 3.
Cooking on unseasoned cast iron can result in sticking, rusting, and a myriad of other issues (some of which are outlined above). Lucky for cast-iron newbies, most skillets sold these days come pre-seasoned. Take your store-bought seasoning a step further though and add your own before you call it good to go.
All cooking oils and fats can be used for seasoning cast iron, but based on availability, affordability, effectiveness, and having a high smoke point, Lodge recommends vegetable oil, melted shortening, or canola oil, like our Seasoning Spray.
Acidic Foods
If you're making a rich tomato sauce, wine-braised meat, or a lemon-based marinade, you might want to consider using a stainless steel or ceramic pot or pan. Acidic foods will strip away metals in even the most seasoned cast-iron cookware, and those metals will get into whatever you're cooking.
Two words: heat & oil.
The most common reason food sticks to cast iron is because the pan is simply too hot. Because cast iron retains heat much better than other types of cookware, you generally don't need to use as high of a heat setting as you normally would with stainless steel or aluminum cookware.
Most cast iron skillets these days come pre-seasoned, meaning they're ready for cooking on as soon as you take them out of the box. However, over time, the seasoning erodes, and you'll need to re-apply it by brushing the skillet with a thin layer of neutral oil and heating it until the oil bonds to the metal.
CLEAN CAST-IRON SKILLET AFTER EVERY USE
Wipe interior surface of still-warm skillet with paper towels to remove any excess food and oil. Rinse under hot running water, scrubbing with nonmetal brush or nonabrasive scrub pad to remove any traces of food. (Use small amount of soap if you like; rinse well.)
If you are able to clean the skillet out by simply wiping it out, stop here. Having a small amount of oil after cleaning is not a problem. In fact, keeping a pan from drying out is an important part of long term maintenance. Over-cleaning your cast iron pan is unnecessary and will only stand to damage your seasoning.