With a high price, depending on the season, black truffles are an ingredient reserved for the most lavish meals. However, one mushroom, could be a more affordable way to approach the black truffle lifestyle. The black trumpet, or Craterellus cornucopioides, has a flavor profile that's been described as rich and smoky, with notes of black truffle when dried. This means you'll get to have the black truffle experience without the black truffle price.
Black trumpet mushrooms technically belong to two species depending on where they grow: the European dominant species, Craterellus cornucopioides, and the North American dominant species, Craterellus fallax. In Europe, they grow in France during the summer and fall, while they grow year-long on the West Coast of the United States. Outside of Northern California, however, they can also be spotted growing in the Midwest and East Coast from mid-summer to fall.
Source: tastingtable.com