What are the different types of truffle fungi and how are they used in culinary dishes?

There are several types of truffle fungi, including black truffles, white truffles, and summer truffles. These fungi are highly prized for their unique and intense flavors, and are used in culinary dishes to add a rich and earthy taste. Truffles are often shaved or grated over dishes like pasta, risotto, and eggs to enhance their flavor. They are considered a delicacy and are used sparingly due to their high cost.