Season that Smillet and hang it on the wall. Answer me this my friend? Do you own any Griswold? It's your American Duty :patriot: to own at least one.
All about me, except the very old, not the name of His Wagner. They are all very well except for frying the chicken Wagner. I do the same problem as you. My mother bought me back again in the mid 80s and used it for a good season. The soil is not bad, But That updates the sides are still new.
You're way too young for that....
Old folks always put their pans in the fire each year when we burned leaves and brush if the pans looked bad. They come out nice and clean then must be re seasoned. If this won't fix it hang it on the wall.
Some cast irons cookware just cannot be seasoned. This most often happens with the newer ones from Vietnam and China but I have had old heirloom types which were impossible too. Toss the 9" loser and buy a 9" Lodge pan to replace it.
Don't even blast that thing. just stick it in the self-clean cycle in the oven, pops out like new.
Lodge cast iron is still made in the USA and (here's the interesting part) Walmart carries them.
I think there is also another brand made here. Name slips my mind. Something Forge.
Look in places like Goodwill for an old Griswold.