What is the black stuff on my cast iron skillet?

Online Answer
The black residue on cast iron skillets is not harmful, but it can compromise the taste of your food. ... Charred food from previous meals. Burnt oil, especially if you use oil that has a low smoke point, such as olive oil. The manufacturer's seasoning, which is common in brand new skillets..
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Lodge ® cast iron cookware comes pre-seasoned and is perfect for cooking up your favorite breakfast or dinner recipes. ... An essential tool for the home chef, our exclusive 10-1/4'' Cast Iron Skillet features the Cracker Barrel Old Country Store ® logo on the bottom..
Many cast-iron aficionados swear that older is definitely betterbetter as in more durable, conducts heat more evenly, and withstands arduous conditions. While cast-iron pans continue to be made from the same material no matter what the era, production methods have changed as demand increased.
Pro Tip: Professional chefs recommend using cast iron, copper, and carbon steel pans. Carbon steel pans contain 99 percent iron and 1 percent iron and has a harder yet lighter and smoother surface than a cast iron pan, which is why most chefs prefer carbon steel cookware in busy kitchens..
Stow in the oven: Ovens make a great storage space for cast iron—but only if your pans are free of wooden parts. Remember, though, to carefully remove the skillet before heating up the oven. Hang 'em up: You can hang your cast-iron skillets and pans on the wall—just be sure your hooks are securely mounted to studs.
The number actually refers to the diameter of the pan in inches across the bottom of the pan, not across its flared top, which is the industry standard way to measure skillet size. ... According to Lodge: "The 10 comes the days from when cast-iron pots and pans were sized to fit on the numbered eyes of a woodstove..