Truffle Recipes December 22, 2015 By Frittata di tartufo nero (black truffle omelette) – Umbria Polenta con tuorlo, Parmigiano-Reggiano, castagne e tartufi bianchi (polenta with poached egg yolk, Parmigiano-Reggiano cheese, chestnut cream and white truffles) -Piemonte Spaghetti al tartufo nero di Norcia (spaghetti in black truffle sauce) – Umbria Tagliatelle con salsiccia e tartufo nero (tagliatelle with sausage and black truffle) – Umbria Tajarin al tartufo (Tagliolini with white truffle) – Piemonte