Truffle oil is a culinary oil infused with the flavor of truffles, a type of fungus known for its strong aroma and taste. Typically made from a base of olive oil or another neutral oil, it is often used as a finishing oil to enhance dishes like pasta, risotto, and salads. The oil can be made using real truffles or synthetic flavoring, with the latter being more common and affordable. While it adds a luxurious touch to meals, it is important to use it sparingly, as its potent flavor can easily overpower other ingredients.