Well I think that mushrooms, as long as they are not button or from a jar, are highly nutritious and highly delicious. We eat them as a side veg at least four times a week, and, in the rare circumstance that we have some that urgently need using up, I have them for breakfast on a slab of buttered toast. I like the big flat ones stuffed with this, that or the other, but just-opening chestnut ones, either sautéed in butter or done in the oven if it's on anyway, are my particular nirvana. Just make sure the water has all gone then add another four minutes.