Truffles are principally eaten raw; thinly shaven over pasta, on pizzas, in risottos or to infuse sauces and warm dishes. Smith says she has harvested only 10 pounds of black truffles since 2006. She'd hoped for 10 times that quantity by now. But, the kind of black truffle varies with the season. Mycorrhizal associations can be pretty complicated, with numer...