Some of the newer cast irons have really rough insides. My take is grind the insides down if you happened to get unlucky an get one of those. If yo have a smooth one --Never - never-never use soap ( aluminum foil and hot water) to clean them up.
BACON grease is the ticket. Clean the skillet off with hot water and an aluminum foil ball. Scrub it good. The skillet is clean so fry up some bacon. Save the grease. When you're done clean the skillet with hot water and aluminum foil ball Set on stove turn the burners on and wipe skillet with bacon grease. Wipe excess grease of with paper towel. Once cooled store it till the next time.
I never, ever let my wife touch my cast iron collection. Remember no soap.
Fried potatoes, eggs, bacon, toast and a beer.
Last edited by Laylow; 10-07-2019 at 11:04 PM.