Wiki says "A truffle is the fruiting body of a subterranean ascomycete fungus, predominantly one of the many species of the genus Tuber. In addition to Tuber, many other genera of fungi are classified as truffles including Geopora, Peziza, Choiromyces, Leucangium, and over a hundred others."
Sprouts for veg
Nectarines for fruit
Truffles are used as a flavouring thing in some dishes, you don’t cook and eat them whole..even if you could afford them!