Feta cheese was cut using a parve ceramic knife. Do I consider the knife milchig now,or can it be made parve again?
Assuming that the cheese was cold when it was cut, the knife should simply be washed off with soap and water that is not hot, and it may be used without any need to kasher it. It may still be used for parve. This is because the cheese only leaves an oily film on the knife without any absorbed taste, since it was cold and the cheese is not considered a dvar charif.