I just got my first cast-iron cookware -- a 2.5qt casserole (similar to the Le Creuset ones, but a fair bit cheaper). I understand that cast-iron cookware has some caveats regarding cleaning and storage, and I've heard conflicting advice about water-heavy cooking with them because of the potential for rust buildup.

I'm planning on steaming some potatoes for a recipe this weekend, and while I could use a cooking tray and aluminum foil, I'd like to see how it turns out with a cast-iron casserole; would this potentially damage or cause rust on the cookware?

  • 2
    Welcome to Seasoned Advice SE! I think your cookware will be fine, as long as you season it first: How to Season a Cast-Iron Skillet
    – elbrant
    Commented Dec 15, 2018 at 6:01
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    Le Creuset is enameled cast iron, which makes a big difference. Is yours?
    – FuzzyChef
    Commented Dec 15, 2018 at 18:12
  • @FuzzyChef yup, this one's enameled as well. Would that affect how it handles steaming food?
    – Jules
    Commented Dec 15, 2018 at 19:32
  • Yes, see answer.
    – FuzzyChef
    Commented Dec 16, 2018 at 0:20

1 Answer 1


Enameled cast iron pots, like the one you have, can be treated as if they were steel for purposes of steaming. You don't need to worry about rust unless the enamel is chipped or cracked. It'll take a bit longer to heat up, but it'll also retain heat better -- so keep in mind that it won't stop steaming until 15 minutes or so after you take it off heat.

If you had a non-enameled cast iron pot, I'd say that you shouldn't steam in it until you had a chance to build up a good seasoning. But that's not an issue for you.

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