I used to have a No 8 Crescent Ozark Missouri cast iron skillet which was now replaced with a Griswold cast iron skillet and an unmarked No 10 skillet. Jimmy uses lard after cooking in them and leaves a fairly thick layer on them to heat on the stove for a couple minutes and then stores them like that and cooks in them. I found that a little problematic, as I don’t use ours everyday and hair and dirt accumulate in the grease. So I use a light coating of Crisco shortening.