青醬, or "pesto," is a traditional Italian sauce made primarily from fresh basil, garlic, pine nuts, Parmesan cheese, and olive oil. It is known for its vibrant green color and rich, aromatic flavor. 青醬 is commonly used as a pasta sauce, but it can also be spread on bread or used as a dip. The origins of 青醬 date back to the Liguria region of Italy, particularly in the city of Genoa. Over the years, various adaptations have emerged, incorporating different herbs and nuts. Today, 青醬 is enjoyed worldwide and is a popular choice for enhancing various dishes.