I recently sanded one of my cast iron pans so the cooking surface was much smoother, mostly as an experiment. This of course means I need to re-season the pan, since it was mostly bare iron.
In an effort to help build a new season, I've been cooking patty melts the last 2 days for lunch, and I'm *really* getting my technique down.
Rye bread, butter, swiss cheese on top of the bread in one pan on medium low (around 250*F) allows the bread to grill and become good and golden/crispy. I start this after frying onions, but before starting the burger patty.
I've been using 80/20 chuck for the patty, seasoned w/ salt and pepper, and doing it smash burger style. I do this after frying the onions in oil and adding salt.
All around a good sandwich