This is a recipe for a traditional Chinese soup. I first tried it at Yong Sing in Honolulu. I found this recipe at chinesefooddiy.com. A couple of tips - do not use bouillon! Use either prepared broth (like that which one can buy in cartons) or, better yet, stock. As for the fungus which is the main ingredient, try Asian food stores for the dried fungus. If you live near a Chinatown, you'll probably have good luck at a Chinese grocery.