Cream of mushroom soup has been Sue’s favourite since we were kids. As a teenager she, the more mature of the two of us, would always order soup at restaurants while I (Julie) ordered fries and gravy. Button mushrooms are fine to use in a cream of mushroom soup, and it’s a great way to use them up if they are starting to wither and dry out. Try meatier portobello mushrooms and exotic varieties such as shiitake, oyster, and cremini to give it more substance and an intense mu