I had some caked, hard burned substance (garlic, really, from steak) on my cast-iron pan. I tried cleaning it with a brush, and it didn't come off.
So unfortunately, I put a bit of muscle into it, and now the bottom of my cat-iron pan has bits that are positively shiny and silvery. I'm pretty sure the seasoning came off here and there.
Is there a way to fix it, other than completely re-stripping the seasoning and re-seasoning it from scratch?