Named for their delicate scalloped shape and subtle seafood-like flavor, oyster mushrooms have a wonderful aroma. They add an appealing shape and texture, as well as a sort of peppery flavor which comes from the uncooked enzymes in the mushrooms. Cooking mellows the flavor, lending them a meaty but tender texture. The versatile "tree oysters" enliven almost any pasta dish, stir-fry, stew or cream soup, and are delicious in omelets and other egg dishes, or as a topping to pizza or steak.