I'm hoping the SE community might have some cleaning suggestions for me! My housemate accidentally used my cast-iron skillet to toast some pine nuts. Problem is, I have a severe peanut/tree nut allergy and I don't have any clue as to how my skillet should be cleaned to get rid of any remaining traces of those pine nuts. I don't want to ruin the seasoning, and hope not to have to replace my cast iron skillet entirely, but I really cannot use the skillet ever again in its current condition. Does anyone have any suggestions? Thanks in advance!