Carbon steel and cast iron cookware have reactive metal surfaces that will rust if left exposed to moisture and air, especially when heated. To use these materials of cookware you need to season them which involves washing the surface clean and applying a very thin layer of oil which you then heat up to a high temperature (usually past the smoke point, but not strictly necessary).
The heating of oil in contact with the metal causes the oil molecules to polymerize and bond to the metal surface. Done properly, this gives your cast iron and carbon steel cookware a smooth, glassy, slightly brown protective polymer layer which prevents rust and helps foods release (though not as well as nonstick pans). The seasoning process can be repeated as many times as you like and it builds up more and more layers which darken over time. A well seasoned piece of cast iron or carbon steel cookware will look shiny and jet black, though this is not necessary for cooking.
The downside of these materials is that acidic or basic foods can damage the polymer layer and dissolve it right off the pan with enough heat and cooking time. Tomato sauce is a classic example of an acidic food that will eat away at the seasoning of a cast iron or carbon steel pan. A well seasoned pan can still be used to cook a tomato sauce, but not one you plan to be simmering for hours and hours (like some Sunday meat sauce like you’d see in Goodfellas).
Stainless steel (as well as enameled or porcelain coated) cookware is nonreactive so you can use it to cook acidic or basic foods no problem!
Ohh right, I didn’t think about how acidic tomatoes are. I love tomatoes, but some of the people around me get absolutely horrible stomach pains apparently.
Anyway, we make tomato based sauces at home, but never have we simmered anything for several hours like that cooking scene in Goodfellas. Should I? Would it be significantly better?
I thought there, who on earth makes tomato sauce in a non-stick pan 😅
Nice writeup btw!
So my stainless steel/inox Lagostina pan is non reactive? What would be the benefit from having a carbon steel one (I have used cast iron a lot but it’s so heavy)?
Exactly that: weight. Some people will give you other reasons why they like carbon steel but the most important is that it works like cast iron only lighter
I don’t want to cause a panic, but acids like tomato juice, ascorbic, citric and vinegar can attack stainless steel and dissolved chrome in the process.
But don’t think of it as extra chrome in your diet. After all, we get iron rich water from our cast iron pipes and fittings. Nah, think of it as that extra cancer you’re gonna be getting! Iron never gave you cancer, that’s a lousy metal. But chrome is pretty good!
TLDR: the tomato sauce (and other acidic fruits) reacts with the iron. Although properly seasoning (fat treating) your pan will ameliorate it, and humanity has used it for time immemorial. It does eat away some of the seasoning, leading to having to te season it, which can be annoying.
Carbon steel or cast iron all the way.
Stainless steel! Neither of those is something you want to use to simmer a tomato sauce.
Why’s that? I’ve never owned any of the 3, all pans have been some form of nonstick.
Carbon steel and cast iron cookware have reactive metal surfaces that will rust if left exposed to moisture and air, especially when heated. To use these materials of cookware you need to season them which involves washing the surface clean and applying a very thin layer of oil which you then heat up to a high temperature (usually past the smoke point, but not strictly necessary).
The heating of oil in contact with the metal causes the oil molecules to polymerize and bond to the metal surface. Done properly, this gives your cast iron and carbon steel cookware a smooth, glassy, slightly brown protective polymer layer which prevents rust and helps foods release (though not as well as nonstick pans). The seasoning process can be repeated as many times as you like and it builds up more and more layers which darken over time. A well seasoned piece of cast iron or carbon steel cookware will look shiny and jet black, though this is not necessary for cooking.
The downside of these materials is that acidic or basic foods can damage the polymer layer and dissolve it right off the pan with enough heat and cooking time. Tomato sauce is a classic example of an acidic food that will eat away at the seasoning of a cast iron or carbon steel pan. A well seasoned pan can still be used to cook a tomato sauce, but not one you plan to be simmering for hours and hours (like some Sunday meat sauce like you’d see in Goodfellas).
Stainless steel (as well as enameled or porcelain coated) cookware is nonreactive so you can use it to cook acidic or basic foods no problem!
Ohh right, I didn’t think about how acidic tomatoes are. I love tomatoes, but some of the people around me get absolutely horrible stomach pains apparently.
Anyway, we make tomato based sauces at home, but never have we simmered anything for several hours like that cooking scene in Goodfellas. Should I? Would it be significantly better?
Oh you’ve got no idea how good tomato sauce can get then! It’s also great for making huge batches so you freeze most of it for later.
Hmmmm I have some bad ideas now, thanks!
I thought there, who on earth makes tomato sauce in a non-stick pan 😅
Nice writeup btw!
So my stainless steel/inox Lagostina pan is non reactive? What would be the benefit from having a carbon steel one (I have used cast iron a lot but it’s so heavy)?
Any community you’d recommend?
Exactly that: weight. Some people will give you other reasons why they like carbon steel but the most important is that it works like cast iron only lighter
A well seasoned carbon steel is pretty much non-stick while in a stainless you usually want some sticking to have something to deglaze for sauces.
Mine sticks enough for a nice sauce :-) !
I don’t want to cause a panic, but acids like tomato juice, ascorbic, citric and vinegar can attack stainless steel and dissolved chrome in the process.
But don’t think of it as extra chrome in your diet. After all, we get iron rich water from our cast iron pipes and fittings. Nah, think of it as that extra cancer you’re gonna be getting! Iron never gave you cancer, that’s a lousy metal. But chrome is pretty good!
TLDR: the tomato sauce (and other acidic fruits) reacts with the iron. Although properly seasoning (fat treating) your pan will ameliorate it, and humanity has used it for time immemorial. It does eat away some of the seasoning, leading to having to te season it, which can be annoying.
Sure, or enamelled cast iron.
Available at a thrift store near you, with no carbon cost!
Used cast iron is usually better than a lot of new stuff. Back in the day, it was common for the pitted surfaces to be ground smooth.
Now you can only get that with some “premium brands” that are willing to take a grinder to a pan before throwing it in the box.
Enameled cast iron is also great
Is this the ceramic coated ones?
https://prudentreviews.com/ceramic-vs-enameled-cookware/
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