QUESTION

Riverdale, NY

Dear Rabbi Linzer,

You previously addressed the the satus of  keilim after making macaroni and cheese with non-hekhshered butter. I’d like to ask a similar question with regard to a keli in which one cooked with Tablet-K cheese. I am assuming one does not rely on Rabbeinu Tam’s leniency, particularly given the Rema’s position in YD 115:1 that gevinat akum makes keilim prohibited. What if one is a roommate and the keilim belong to someone else? Assuming that any new food cooked in those keilim (which are no longer ben yomo) uses cheese with a proper hashgachah, can one consider that bedieved and kosher (based on Taz YD 115:12) if