松露, or truffles, are a type of edible fungus that grow underground, typically in association with the roots of certain trees like 橡树 and 榛树. They are highly prized for their unique flavor and aroma, making them a sought-after ingredient in gourmet cooking. Truffles are often found in regions with specific soil and climate conditions, particularly in 欧洲. There are several varieties of truffles, with the most famous being the 黑松露 and 白松露. Harvesting truffles is a labor-intensive process, often involving trained animals like 狗 or 猪 to sniff them out. Due to their rarity and the difficulty of cultivation, truffles can be quite expensive, sometimes costing hundreds or even thousands of dollars per pound.