I just moved into a new apartment with non-Jewish roommates. I keep completely kosher and I am trying to figure out how to make hot food in a non-kosher kitchen. From what I understand, I can use the stove top with my kosher pots/pans because it has metal grates which are always koshered by the flame. I also read that I can use the oven and microwave if I double wrap my food. My question is about practicality. If I double wrap trays of food every time I cook in the oven that will use a lot of aluminum foil. Is there an approach using some kind of reusable material to wrap my food?
You can get containers that fit one into the other, and then close both of them. This will be a double covering, and reuseable.