Foodies know that truffles can add complexity to a dish, but at up to $1,400 a pound, they're too pricy for the average person's budget. But don't worry. Truffle oil -- made by infusing olive oil or sunflower oil with truffle aroma -- costs a fraction of the price, and when it's used as a finishing oil it can deliver similar flavors.
Mushrooms also make fitting substitutes for truffles. Try using porcini mushrooms, which have a nice pungent flavor and are great in many of the dishes that call for the more expensive fungi.