Truffles are a type of fungus that grow underground, often near the roots of certain trees like oak and hazelnut. They are prized for their unique flavor and aroma, making them a sought-after ingredient in gourmet cooking. Truffles can be black or white, with each variety offering a distinct taste experience. Finding truffles is a special skill, usually done with the help of trained animals, such as dogs or pigs, that can sniff them out. Because they are rare and difficult to harvest, truffles can be quite expensive, sometimes costing hundreds or even thousands of dollars per pound.