Peshawari Broth with Mushrooms and Fish

Here is a soup that I had in Pakistan’s most famous northwestern city, Peshawar. Many of the grander Muslim families, in both India and Pakistan, offer some form of aab gosht, or meat broth, at the start of a meal. Sometimes it comes in cups even before one is seated and requires just sipping. This is a variation of that and requires a spoon. What I was offered on a rather cold day was a steaming bowl of well-seasoned goat broth in which floated oyster mushrooms and slices of river fish. It was so delicious that I decided to come up with a version myself. I have used beef stock, though lamb stock would do as well. If you cannot get fresh oyster mushrooms, use the canned ones, sold by all Chinese grocers, or canned straw mushrooms. Just drain them and rinse them out.