Pizza and eating out

How could it be that according to the Torah of Rav Abadi one is permitted to eat cheese pizza from a non-kosher pizza place? what about considerations of the oven being not kosher? Reicha? Zeiah? The pizza pan on which the pizza rests being not kosher? Gevinas akum? a...

Maarit Ayin

Someone asked me recently… “why is it not Maarit Ayin to eat out kosher food in a non-kosher restaurant?”

treif keilim

Despite stam keilim being eino Ben yomo, why are we not required to use kashered cookwear when dining out? Similarly, if I rent an airbnb that comes with cookwear, do I have to kasher the cookwear before using it?