Black truffles are a type of edible fungus that grow underground, primarily in regions of Europe such as France and Italy. They thrive in symbiotic relationships with the roots of certain trees, including oak and hazelnut. Known for their strong aroma and unique flavor, black truffles are often used in gourmet cooking to enhance various dishes. Harvesting black truffles is a specialized process, typically involving trained dogs or pigs that can detect their scent. These truffles are usually harvested in the winter months and can be quite expensive due to their rarity and the difficulty of finding them.