Seasoning
Did you know that rusted cast iron cookware can be recovered? Neither did I.
Last summer I bought a cast iron grill to use on top of our campstove. As I had never used cast iron before, when I got home I scrubbed it clean.
Silly me. It rusted. I darn near threw it out.
But it turns out you can scrub the rust off and reseason it with oil. So I did just that, tonight. Hopefully when I cook a steak on it this weekend it doesn't kill us.