Requiring just under 20 minutes cooking time, this flavorful soup, which is made with both fresh and dried mushrooms in a pressure cooker,is well suited to an impromptu supper with friends. If you wish, you may make this on the stovetop and simmer for serveral hours. Just serve with a whole grain bread and mixed greens salad. Adapted from Great Vegetarian Cooking Under Pressure and Country Living magazine. Enjoy! Soups like this are popular in the Northeast, Mid West, West, actually anywhere it gets cold!