Pesto is a flavorful sauce that originated in Italy, primarily made from fresh basil leaves, garlic, pine nuts, Parmesan cheese, and olive oil. This vibrant green mixture is often used to enhance pasta dishes, but it can also be spread on sandwiches or used as a dip. The combination of ingredients creates a rich, aromatic taste that many people love. There are various types of pesto, with the most popular being Genovese pesto, which hails from the city of Genoa. While traditional recipes use pine nuts, you can also find variations that substitute other nuts like walnuts or almonds. Pesto is not only delicious but also a versatile ingredient in many cuisines.