This is probably a mushroom I should have introduced in year one. The common name: black trumpet, actually refers to several closely related species: Craterellus fallax (North America), Craterellus cornucopioides (Europe), Craterellus foetidus (Eastern and Mid Western North America), Craterellus caeruleofuscus (North American Great Lakes region), and possibly more. Some of these names are being re-evaluated in the age of DNA testing, and there may prove to be either more or fewer species than we thought.
In addition to numerous scientific names, these mushrooms also go by a variety of common names, including: horn of plenty, trumpet of death / trumpet de la mort (in France), devil's trumpet or devil's horn, and black chanterelle.
From a culinary and foraging standpoint, all of the above appear nearly identical, taste about the same, and can only be distinguished with location, spore prints, microscopic analysis, or small details present in large collections. From here on we will treat them as one in the same.
This is one of the best tasting wild edible mushrooms you can find. I prefer black trumpets to their more famous cousins, the chanterelles, and to the king bolete/porcini or morels. I compare their flavor positively to truffles, the most expensive of all fungus. However, if you were to simply cook these as you would any other mushroom, they would taste good, but you would be missing out on the best ways to use their flavor.
Best of all, black trumpets are incredibly easy to ID, with no poisonous look-a-likes, making them perfect for the beginner mushroom hunter.