Cast iron is celebrated for delivering a perfect sear on beef and chicken, and for crisping potatoes better than almost any other pan in your rack. It’s budget-friendly too, and a 10-inch skillet won’t run you more than $25<\/span>.<\/p>\n But cast iron’s rugged reputation hides a surprising fragility. That slick, hard-won seasoning you’ve spent months or years nurturing is more porous than it seems, and certain ingredients can trigger reactions that eat through it.<\/p>\n Highly acidic foods and vinegar-based sauces are the worst offenders, stripping the protective surface bare and leaving your dinner with an unpleasant metallic aftertaste.<\/p>\n To separate fact from kitchen folklore, I spoke with Eric Rowse, a lead chef instructor at the Institute of Culinary Education. Rowse walked me through a few foods that can damage cookware and explained why some common cooking habits can quietly destroy it.\u00a0<\/p>\n Avoid these foods if you want to extend the life of your cast-iron skillet.\u00a0<\/p>\n <\/span>Catherine McQueen\/Getty<\/span><\/figcaption><\/figure>\n According to Rowse, you can technically cook anything in cast iron — even\u00a0fish<\/span><\/span>\u00a0and\u00a0eggs<\/span><\/span>. Still, some foods react poorly with cast iron if not cooked properly, leading to surface discoloration or a metallic taste.\u00a0 <\/p>\n It’s OK to cook acidic foods such as tomatoes and vinegar in your cast-iron pan, but letting them sit for long periods can eat away at the seasoning.\u00a0<\/p>\n <\/span>istetiana\/Getty Images<\/span><\/figcaption><\/figure>\n “Highly acidic foods, such as tomato and tomato-based dishes, can be problematic on raw iron, poorly or underseasoned cast iron,” Rowse says. <\/p>\n “Cooking these foods in neglected cast iron can produce a metallic taste. If the pan is well seasoned and cleaned out after each use, it isn’t a problem.”\u00a0 <\/p>\n To be safe,\u00a0cook some bacon<\/span><\/span> in your skillet afterward to give the seasoning extra protection. As a bonus, you’ll have bacon on hand. What you don’t want to do is leave the acidic food just sitting in the pan, which can eat away at the seasoning. <\/p>\n Vinegar-based sauces and marinades can damage cast-iron cookware.<\/p>\n <\/span>Rafael Ben-Ari\/Getty Images<\/span><\/figcaption><\/figure>\n Vinegar can damage a seasoned cast-iron skillet for the same reason it can damage tomatoes, sending you back to square one. Vinegar-based foods like adobo or Carolina-style barbecue sauce<\/span><\/span> are good examples of acidic foods that shouldn’t sit in a cast-iron pan for long.\u00a0 <\/p>\n If you use vinegar in a recipe and cook it in cast iron, clean the pan immediately with hot water and salt, or a small dash of gentle dish soap. <\/p>\n Read more:<\/strong>\u00a0Clean Your Cast Iron Skillet Easily With This Common Kitchen Staple<\/span><\/span><\/p>\n Avoid cooking citrus-based sauces in your cast-iron cookware for long periods.<\/p>\n <\/span>G\u00e9za B\u00e1lint Ujv\u00e1rosi\/EyeEm\/Getty Images<\/span><\/figcaption><\/figure>\n While there may not be many reasons to use a cast-iron skillet for citrus, certain recipes call for a fair amount of lemon or lime juice. A squeeze of lemon at the end probably won’t destroy your cast-iron pan, but don’t let citrus juice simmer inside of it for long or your precious patina won’t survive the night.\u00a0 <\/p>\n A heavily wine-based sauce shouldn’t sit in your cast-iron pan for long.<\/p>\n <\/span>fermate\/Getty Images<\/span><\/figcaption><\/figure>\n Cooking with wine is almost always a good idea. In fact, we have a list of recipes<\/span><\/span>\u00a0that thrive with a few ounces of red or white. But letting acid-heavy wine braise or simmer in a cast-iron pot or pan for too long could erode the slick patina, leaving you with an unseasoned skillet that food will stick to. <\/p>\n A properly seasoned cast-iron skillet can cook eggs without issue.<\/p>\n <\/span>Getty Images<\/span><\/figcaption><\/figure>\n While they won’t damage your pan,\u00a0eggs<\/span><\/span> are tricky to pan-fry without leaving a sticky mess. Cast-iron cookware isn’t as nonstick as chemically coated pans, but it’s still a fine candidate for scrambling or frying the morning staple. <\/p>\n “I love cooking eggs in cast iron,” Rowse told us. I have a small 5-inch one that I use for fried eggs. Cast iron can get super hot, but precise control is harder because it retains heat for longer, making it more difficult to make small adjustments to the temperature.” <\/p>\n I heat my prepared meals up in a skillet or air fryer if I’m home.<\/p>\n <\/span>David Watsky\/CNET<\/span><\/figcaption><\/figure>\n Likewise, a wide variety of fish are flaky and tend to stick to surfaces if not properly managed. If your cast-iron’s patina isn’t properly slicked or is too hot when the fish goes down, you may scrape half of your halibut from the bottom of the pan.\u00a0 <\/p>\n Properly seasoning your cast iron will keep foods such as fish and eggs from sticking.<\/p>\n <\/span>Tyler Lizenby\/CNET<\/span><\/figcaption><\/figure>\n First and foremost, you’ll want to properly season<\/span><\/span> so you can cook even the stickiest foods without worry.\u00a0 <\/p>\n Avoid slow-braising or simmering acidic foods in cast iron on the stovetop for extended periods. When the food is finished cooking, remove it and wash your cast-iron pan immediately with hot water, a drop of dish soap and a sprinkling of kitchen salt<\/span><\/span> for extra stuck-on foods.\u00a0 <\/p>\n And if you’re unsure, opt for an acid-safe piece of cookware, such as an\u00a0enameled Dutch oven<\/span><\/span> or stainless-steel skillet. <\/p>\n<\/article>\n<\/div>\n<\/div>\n Managing Editor \/ Home and Kitchen<\/span><\/div>\n<\/div>\n David lives in Brooklyn where he’s spent more than a decade covering all things edible, including meal kit services, food subscriptions, kitchen tools and cooking tips. <\/p>\n David earned his BA from Northeastern and has toiled in nearly every aspect of the food business, including as a line cook in Rhode Island where he once made a steak sandwich for Lamar Odom. <\/p>\n Right now he’s likely somewhere stress-testing a blender or tinkering with a toaster. Anything with sesame is his all-time favorite food this week.<\/span> See full bio <\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n Cast iron is celebrated for delivering a perfect sear on beef and chicken, and for crisping potatoes better than almost any other pan in your rack. It’s budget-friendly too, and a 10-inch skillet won’t run you more than $25<\/span>.<\/p>\n But cast iron’s rugged reputation hides a surprising fragility. That slick, hard-won seasoning you’ve spent months or years nurturing is more porous than it seems, and certain ingredients can trigger reactions that eat through it.<\/p>\n Highly acidic foods and vinegar-based sauces are the worst offenders, stripping the protective surface bare and leaving your dinner with an unpleasant metallic aftertaste.<\/p>\n To separate fact from kitchen folklore, I spoke with Eric Rowse, a lead chef instructor at the Institute of Culinary Education. Rowse walked me through a few foods that can damage cookware and explained why some common cooking habits can quietly destroy it.\u00a0<\/p>\n Avoid these foods if you want to extend the life of your cast-iron skillet.\u00a0<\/p>\n <\/span>Catherine McQueen\/Getty<\/span><\/figcaption><\/figure>\n According to Rowse, you can technically cook anything in cast iron — even\u00a0fish<\/span><\/span>\u00a0and\u00a0eggs<\/span><\/span>. Still, some foods react poorly with cast iron if not cooked properly, leading to surface discoloration or a metallic taste.\u00a0 <\/p>\n It’s OK to cook acidic foods such as tomatoes and vinegar in your cast-iron pan, but letting them sit for long periods can eat away at the seasoning.\u00a0<\/p>\n <\/span>istetiana\/Getty Images<\/span><\/figcaption><\/figure>\n “Highly acidic foods, such as tomato and tomato-based dishes, can be problematic on raw iron, poorly or underseasoned cast iron,” Rowse says. <\/p>\n “Cooking these foods in neglected cast iron can produce a metallic taste. If the pan is well seasoned and cleaned out after each use, it isn’t a problem.”\u00a0 <\/p>\n To be safe,\u00a0cook some bacon<\/span><\/span> in your skillet afterward to give the seasoning extra protection. As a bonus, you’ll have bacon on hand. What you don’t want to do is leave the acidic food just sitting in the pan, which can eat away at the seasoning. <\/p>\n Vinegar-based sauces and marinades can damage cast-iron cookware.<\/p>\n <\/span>Rafael Ben-Ari\/Getty Images<\/span><\/figcaption><\/figure>\n Vinegar can damage a seasoned cast-iron skillet for the same reason it can damage tomatoes, sending you back to square one. Vinegar-based foods like adobo or Carolina-style barbecue sauce<\/span><\/span> are good examples of acidic foods that shouldn’t sit in a cast-iron pan for long.\u00a0 <\/p>\n If you use vinegar in a recipe and cook it in cast iron, clean the pan immediately with hot water and salt, or a small dash of gentle dish soap. <\/p>\n Read more:<\/strong>\u00a0Clean Your Cast Iron Skillet Easily With This Common Kitchen Staple<\/span><\/span><\/p>\n Avoid cooking citrus-based sauces in your cast-iron cookware for long periods.<\/p>\n <\/span>G\u00e9za B\u00e1lint Ujv\u00e1rosi\/EyeEm\/Getty Images<\/span><\/figcaption><\/figure>\n While there may not be many reasons to use a cast-iron skillet for citrus, certain recipes call for a fair amount of lemon or lime juice. A squeeze of lemon at the end probably won’t destroy your cast-iron pan, but don’t let citrus juice simmer inside of it for long or your precious patina won’t survive the night.\u00a0 <\/p>\n A heavily wine-based sauce shouldn’t sit in your cast-iron pan for long.<\/p>\n <\/span>fermate\/Getty Images<\/span><\/figcaption><\/figure>\n Cooking with wine is almost always a good idea. In fact, we have a list of recipes<\/span><\/span>\u00a0that thrive with a few ounces of red or white. But letting acid-heavy wine braise or simmer in a cast-iron pot or pan for too long could erode the slick patina, leaving you with an unseasoned skillet that food will stick to. <\/p>\n A properly seasoned cast-iron skillet can cook eggs without issue.<\/p>\n <\/span>Getty Images<\/span><\/figcaption><\/figure>\n While they won’t damage your pan,\u00a0eggs<\/span><\/span> are tricky to pan-fry without leaving a sticky mess. Cast-iron cookware isn’t as nonstick as chemically coated pans, but it’s still a fine candidate for scrambling or frying the morning staple. <\/p>\n “I love cooking eggs in cast iron,” Rowse told us. I have a small 5-inch one that I use for fried eggs. Cast iron can get super hot, but precise control is harder because it retains heat for longer, making it more difficult to make small adjustments to the temperature.” <\/p>\n I heat my prepared meals up in a skillet or air fryer if I’m home.<\/p>\n <\/span>David Watsky\/CNET<\/span><\/figcaption><\/figure>\n Likewise, a wide variety of fish are flaky and tend to stick to surfaces if not properly managed. If your cast-iron’s patina isn’t properly slicked or is too hot when the fish goes down, you may scrape half of your halibut from the bottom of the pan.\u00a0 <\/p>\n Properly seasoning your cast iron will keep foods such as fish and eggs from sticking.<\/p>\n <\/span>Tyler Lizenby\/CNET<\/span><\/figcaption><\/figure>\n First and foremost, you’ll want to properly season<\/span><\/span> so you can cook even the stickiest foods without worry.\u00a0 <\/p>\n Avoid slow-braising or simmering acidic foods in cast iron on the stovetop for extended periods. When the food is finished cooking, remove it and wash your cast-iron pan immediately with hot water, a drop of dish soap and a sprinkling of kitchen salt<\/span><\/span> for extra stuck-on foods.\u00a0 <\/p>\n And if you’re unsure, opt for an acid-safe piece of cookware, such as an\u00a0enameled Dutch oven<\/span><\/span> or stainless-steel skillet. <\/p>\n<\/article>\n<\/div>\n<\/div>\n Cast iron is celebrated for delivering a perfect sear on beef and chicken, and for crisping potatoes better than almost any other pan in your rack. It’s budget-friendly too, and a 10-inch skillet won’t run you more than $25<\/span>.<\/p>\n But cast iron’s rugged reputation hides a surprising fragility. That slick, hard-won seasoning you’ve spent months or years nurturing is more porous than it seems, and certain ingredients can trigger reactions that eat through it.<\/p>\n Highly acidic foods and vinegar-based sauces are the worst offenders, stripping the protective surface bare and leaving your dinner with an unpleasant metallic aftertaste.<\/p>\n To separate fact from kitchen folklore, I spoke with Eric Rowse, a lead chef instructor at the Institute of Culinary Education. Rowse walked me through a few foods that can damage cookware and explained why some common cooking habits can quietly destroy it.\u00a0<\/p>\n Avoid these foods if you want to extend the life of your cast-iron skillet.\u00a0<\/p>\n <\/span>Catherine McQueen\/Getty<\/span><\/figcaption><\/figure>\n According to Rowse, you can technically cook anything in cast iron — even\u00a0fish<\/span><\/span>\u00a0and\u00a0eggs<\/span><\/span>. Still, some foods react poorly with cast iron if not cooked properly, leading to surface discoloration or a metallic taste.\u00a0 <\/p>\n It’s OK to cook acidic foods such as tomatoes and vinegar in your cast-iron pan, but letting them sit for long periods can eat away at the seasoning.\u00a0<\/p>\n <\/span>istetiana\/Getty Images<\/span><\/figcaption><\/figure>\n “Highly acidic foods, such as tomato and tomato-based dishes, can be problematic on raw iron, poorly or underseasoned cast iron,” Rowse says. <\/p>\n “Cooking these foods in neglected cast iron can produce a metallic taste. If the pan is well seasoned and cleaned out after each use, it isn’t a problem.”\u00a0 <\/p>\n To be safe,\u00a0Foods that can damage cast-iron pans<\/h2>\n
1. Tomatoes <\/h3>\n
2. Vinegar<\/h3>\n
3. Citrus <\/h3>\n
4. Wine-based sauces\u00a0 <\/h3>\n
<\/div>\n<\/div>\n
Can you cook eggs in a cast-iron skillet? <\/h3>\n
Can you cook fish in a cast-iron pan? <\/h3>\n
How to avoid a cast-iron cookware problem<\/h3>\n
![\"Headshot](\"https:\/\/www.cnet.com\/a\/img\/resize\/f6296159cc1e932a7202880def7194107b21f89e\/hub\/2026\/02\/02\/296ba815-8a0a-4051-a04a-233db4a9ed6c\/screenshot-2026-02-02-at-1-15-55pm.png?auto=webp&fit=crop&height=64&width=64\")
<\/div>\nFoods that can damage cast-iron pans<\/h2>\n
1. Tomatoes <\/h3>\n
2. Vinegar<\/h3>\n
3. Citrus <\/h3>\n
4. Wine-based sauces\u00a0 <\/h3>\n
<\/div>\n<\/div>\n
Can you cook eggs in a cast-iron skillet? <\/h3>\n
Can you cook fish in a cast-iron pan? <\/h3>\n
How to avoid a cast-iron cookware problem<\/h3>\n
Foods that can damage cast-iron pans<\/h2>\n
1. Tomatoes <\/h3>\n