I found the recipe online. It's from the Moosewood Cookbook. I liked the soup but dh did not, in fact, he couldn't even eat it and that's only the 2nd time tha't happened in 8 years with a meal I cooked. He normally eats anything. We used button mushrooms but I think it would have been better with a mix of varieties. Dh said the mushrooms "tasted watery inside." I think they were just sliced a little too thick.