Hi Linda! There was a discussion on this with some great answers here on Hometalk. Here's a link to it. Hope it helps. https://www.hometalk.com/39433673/q-how-do-i-clean-a-cast-iron-tea-kettle
Steel wool should remove it easily and throughly dry.
Start with a wire brush and scrub off as much of the rust as you can. Soak any remaining spots with Coca-Cola.
Hi! Just yesterday I found this great site on all things cast iron:
Hi Linda: To remove rust, use fine steel wool to remove rust from affected areas. Scour the teapot until the area returns to raw cast iron. Wash it thoroughly using warm water and mild dish soap. Scrub with bristle brush, gentle scouring pad, or mesh sponge if needed. Never use vinegar. Vinegar will remove the rust, but it will also remove the cast iron surface :( Then, I'd wipe it off with canola or vegetable oil. Let the oil sit on the surface for about 30 seconds and then wipe it off as best as you can. Good luck
Thanks so much for your help! Remembered the steel wool at least lol! I use vinegar for so much, tyvm for reminding not to!
So many great answers & help so quickly! Owe each of you a bunch!! Will let you know how it turns out. Luckily, rust is mainly on the lid & small portion of the pot. You're all simply terrific! 🤗😊
Steel wool or stiff wire brush first to remove any loose, then you can sand. Apply WD40 or other oil after that. I've heard you can soak in CocaCola but I've never tried it.