Dry your cast iron completely every time After rinsing, dry your cast iron well with a clean cloth and then place it on the stovetop over low heat. Allow to dry for a few minutes, then use a cloth or paper towel to rub it with a thin layer of shortening, lard, bacon grease, or a neutral high-heat cooking oil.
Dry thoroughly right after you clean—do not let your cast iron air dry. Set on the stove over medium heat to evaporate any remaining water. Rub with a thin coat of vegetable oil (about a ½ teaspoon for a 10 inch skillet) until evenly coated and shiny. Let cool completely and store in a dry place.
Every time you use your cast-iron skillet, you're wearing some of the seasoning down, and eventually it won't function as well. So season it again whenever you see dull spots. Or do what I do: season it whenever it's out and your oven is on.
The answer is yes! Using olive oil to season your cast iron skillet is a simple and effective way to season your pan.
When cooking in cast iron, you should add a little oil to the pan before adding your food. This helps ensure the food doesn't stick, and it helps build layers of seasoning. You can generally use whatever oil you prefer, as long as the cooking temperature is below the smoke point of the oil.
First, it's important to always heat up the pan prior to adding any oil, butter, or fat. When cooking on cast iron, when it comes to fat, less is not always more. It's better to err on the side of too much fat, and then simply drain any excess after cooking.
Generally, we recommend seasoning your cast iron about once per month, but after every time you use it works as well if you find that it could use some seasoning. What type of oil is best for seasoning a cast iron skillet? Canola, vegetable, or coconut oil are best.
Dry your cast iron completely every time
After rinsing, dry your cast iron well with a clean cloth and then place it on the stovetop over low heat. Allow to dry for a few minutes, then use a cloth or paper towel to rub it with a thin layer of shortening, lard, bacon grease, or a neutral high-heat cooking oil.
Over the lifetime of a cast-iron skillet, you'll usually just maintain or touch up its seasoning. But if the seasoning becomes very dull or damaged (seasoning flakes off) or if it badly rusts (can't be scrubbed away), you'll need to give it an overhaul by stripping and reseasoning the surface.
Dry it off: It is important to rinse and dry your cast iron skillet immediately after cleaning. We recommend using a lint-free towel. NEVER allow cast iron to air-dry as this can allow rust to build. This is particularly important if you have just used soap.
Cast Iron Skillet Cleaning Method: Salt and Paper Towel
The method: Pour 1 cup coarse kosher salt into the still-warm skillet. Use a folded kitchen towel to scour. Discard the salt and rinse the skillet with hot water.
To clean a cast iron skillet, wait for it to cool down and then run hot water over it in the sink. Do not let the pan soak in water.
If the food is really cooked on, you can always let the pan soak for a bit. But don't let cast iron sit in water too long or it will start to rust. Now, if you wash your cast iron with water, it is imperative that you dry it as soon as possible. Otherwise it will rust, especially if it's a newer pan.
The Cause:
Rust forms when the cookware is exposed to moisture for extended periods of time and is not harmful in any way. If cast iron is left in the sink to soak, put in the dishwasher, or allowed to air dry, it will rust.
Truthfully, leaving your cast iron to soak in the sink is worse for it than any tomato sauce or soap will every be. Cast iron is porous, meaning that long exposure to water can cause it to soak up the moisture and eventually rust.
Avoid using the dishwasher, soap, or steel wool, as these may strip the pan's seasoning. Scrub off stuck-on bits: To remove stuck-on food, scrub the pan with a paste of coarse kosher salt and water. Then rinse or wipe with a paper towel. Stubborn food residue may also be loosened by boiling water in the pan.
The black residue in your cast iron skillet is not dangerous. It is leftover burnt food and oil. However, it is unsightly, and it can change the flavor of your food a bit. Removing the residue and then re-seasoning will help.
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.
Too much oil baked into the cast iron will cause it to polymerize unevenly and eventually will cause the surface of the skillet to flake. Adding too much oil when seasoning will also cause your pan to become sticky, notes Lodge.
You're going to have to give your skillet at least six coats of oil and baking to create a hardwearing non stick base. Basically, new cast iron needs some intense TLC for the first year or so of it's life.
Cast iron pans can leach a sizeable amount of iron into your food, exceeding dietary intake in some cases. Acidic foods will contribute to much more leaching while an old, heavily-seasoned pan will leach much less iron than a newer one.