If someone warmed pareve food in a dirty microwave that has been used to cook basar b’chalav and there is remnants of that food in the microwave, or he warmed milchig or fleishig food in a dirty microwave that had been used to cook the opposite and there was remnants of it in the microwave, would the resulting food become assur b’han’ah?
Was the food double wrapped?
At Disney World, they sell kosher meals that are pre-packaged and double-wrapped before they are microwaved.
Though, I’m unsure whether the food is cooked in a kosher microwave or not (fleishig or milchig).
If it’s double-wrapped there’s no question that it can be eaten, and kal v’chomer it’s not assur b’han’ah. Obviously my question is where the food was not wrapped.
LB: Once the food is double wrapped it can be warmed up in any oven. It doesn’t matter where it was initially cooked.
For something to be assur behanaah it has to be Derech Bishul, I don’t think a microwave counts.
If the microwave was dirty and the Basar Bechalav dirt came in hot contact with the food being warmed up, it could possibly be Assur Behanaah.
If the kosher food had 60 times the treif, it wouldn’t be Assur Behanaah.
In general, something must be an Issur Deoraysah to become Assur Behanaah, which isn’t always so easy.
If the previous Basar Bechalav was an “Issur Baluah” (for example a potato which absorbed Basar Bechalav), it wouldn’t asser behanaah.
If it wasn’t kosher meat and kosher milk, (non kosher species is definitely not assur behanaah, kosher species is assur behanaah according to most Poskim, Dagul Mervava is meikil bmokom hefsed).
In short, it probably wasn’t assur behanaah.
To the OP: Why would you use a dirty microwave?
Sechel HaYashar, you say that it may be assur be’hana’ah if it came in contact with it in the hot microwave, but according to those poskim who say that microwave cooking isn’t derech bishul, wouldn’t it be mutar b’hana’ah?
Anything that isn’t Derech Bishul is mutar behanaah. Although could be that midrabanan it’s assur behanaah.