We have a standard crock pot – ceramic pot that fits into a metal enclosure. Someone in my home was working on a craft project, which required heat. The person bought a frying pan from a second hand store (not kosher), and heated the item in the non-kosher frying pan, on the stove. It didn’t work, so the item (that was in the heated non-kosher frying pan) was then placed in the crock pot and heated that way. Let’s assume the item went into both the base alone, as well as the ceramic pot on the base. Is the crock pot still kosher? If not, can it be kashered?