Portobello (at least in terms of size; not necessarily deliciousness) are the “king of mushrooms”. It’s truly amazing how large they can get, and that size. When I first met my husband he was convinced that he was “allergic” to mushrooms. He had somehow lived his entire life believing that mushrooms, along with a few. At WHFoods, we include crimini mushrooms as one of our 38 profiled vegetables because these mushrooms are not only found in the produce section alongside of many. Several hours before cooking, place portobello mushrooms in a large sealable plastic bag. Pour in some olive oil, enough to coat all mushrooms, plus some excess.