Hi Spook.I do it the easy way wash the pan after use under hotwater but before that clean out the fat with paper tisues.nice and clean Greetings.Hubertus have a great Sunday.
Salt? On cast iron? Makes me think...rust....why would you do that? While the pan is still hot, go under hot water with a light scrub...reoil...and done. None of the waste of all that salt..especially that "expensive" canning salt. You do what you do...I'll save the time and money.