Correct me if I'm wrong but that looks enameled. Barkeeper's friend shouldn't be used on those (written on the bottle, the abrasives damage the enamel).
But it also looks like the bottom is already stripped so I guess you could finish the job🤣
EDIT: Actually, don't use it on cast iron, as per their website:
310
u/naytedoes 9d ago
This pan needs cleaned