When I'm married to such a smart man, I really do learn something new every day. Last night he warmed up sweet potatoes. In a lovely pyrex dish. I was impressed he had covered it, but questioned him about not taking the top off at all. I always take the top off and place it loosely on top to only prevent splatting all over.
Well, apparently these tops are supposed to be sealed on while microwaving to evenly heat the food and prevent the bowl from getting too hot. I didn't even have to use a hot pad, which I usually do, to take it out! I was simply amazed at this new knowledge I gained:)