White truffles are a type of fungus that grow underground, primarily in regions of Italy and France. They are highly prized for their unique aroma and flavor, often used in gourmet cooking. White truffles typically have a pale cream to yellowish color and can grow up to the size of a small apple. Harvesting white truffles is a delicate process, usually done in the fall and winter months. Truffle hunters often use trained dogs or pigs to locate them, as these animals can detect the strong scent of the truffles beneath the soil. Due to their rarity, white truffles can be quite expensive.