I have a Lodge cast iron pot that I bought at Wal-mart.
It looks like this.
What should I do to get is usable again.
Start all over?
Hard to tell from the pic. The bottom doesn't look all that bad?
Looks like maybe something acidic was stored in it?
A partial takedown and reseasoning on the sides might or might not work?
Good luck and good smoking
Give it a scrub down with a scotch bright pad. I tell how bad it is in the pictures.
I don't use soap on any cast iron. I have put it in the fire overnight. I have bead blasted it. But never soap. I have found some really nice cast iron at garage sales that they say just take it. It is in to bad of shape to ever use. I just smile and wave as I drive away.
Tomato's will also cause that. Gumbo is so good. But if you add a tomato you may get that from the acid. Other food also has acid in it.
Not a big deal. Just remove the rust and re season.
You can scrub out that stuff with a kitchen pad and oil. Basically you'll be seasoning it all over again, Once it develops a denser type of seasoning you won't get that rusty/crusty stuff in the pores like that.
It takes a while to get a really good coating....it's a process imho.