Jerusalem artichoke (topinambour in French)-this is a root vegetable that the French elders detest because that and potatoes is what they ate during the war, and nothing else. Some great French chefs are bringing this veggie back into vogue. It is a great trampoline for both foie gras and truffles.
A nearly perfect mixture. There is both a sweetness and a pepperiness inherent in Jerusalem artichokes that echoes those elements in truffles making them sing together.