Baking in a Meat Oven
Question
Answer
Hello,
A meat or dairy oven, even if it was used that day, is permitted to bake pareve food, even when planning to eat it with the other type.
This rule applies when baked on a pareve tray or a disposable tray, but if baked on a tray of one type, and the tray was used that day, initially one should not bake pareve on it if planning to eat with the other type. If it was already baked and one wants to eat it with the other type, Sephardim are permitted, and Ashkenazim are prohibited. If the pareve food is already mixed with the other type, it is permitted to eat even for Ashkenazim.
A tray of one type that was not used that day, and one wants to bake pareve on it with the intention to eat with the other type, Sephardim are permitted initially. Ashkenazim, if they have another tray, should not bake pareve on this with the intention to eat with the other type, but if it was already baked, it is permitted to mix with the other type. If there is no other tray, it is permitted even initially to bake on this with the intention to eat with the other type.
Regarding koshering for Passover: according to a check, only a small part of ovens called 'pyrolytic' reach the required heat to kosher an oven. Therefore, it is necessary to verify if your model is on the list of approved ovens.
I am attaching the updated list, approved by our teacher the Gaon, Rabbi Avraham Fried, shlita.
Source
Shulchan Aruch Yoreh De'ah, Siman 95
According to the instructions of the Gaon, Rabbi Avraham Fried, shlita