Black Trumpet or Craterellus cornucopioides are funnel shaped mushrooms with wavy caps. They are also known as Horn of Plenty. In regard to taste, they are considered among the best tasting mushrooms in the world. In fact, they are comparable in taste to chanterelles, porcini and even truffles. Black Trumpet mushrooms are not easy to grow. In the wild, they are found growing among decaying and dried leaves in hardwood deciduous woodlands.