Is it permissible to switch my Pesach dairy plates and use them for meat this year, and vice versa? Obviously, they’ve not been used in a year. They are china.
Technically it might be possible to kasher from meat to dairy if the utensil wasn’t used in 12 months. However practically in this case, since we can’t kasher china, since china is considered a kli cheres and isn’t “kasherable”..
Radbaz 3-401, Mishna Berura 451-163, Yesodei Yishurun 6- pg. 139,