Basil walnut pesto is a traditional Italian sauce made with fresh basil leaves, walnuts, garlic, olive oil, cheese, and sometimes lemon juice. The ingredients are blended together to create a smooth and creamy paste.

The sauce is known for its bright green color and distinct fresh and herbal flavor, which is achieved by the use of the fresh basil leaves. The walnuts provide a nutty and slightly sweet flavor, while the garlic and  cheese add a savory and tangy note.

Basil walnut pesto is commonly used as a sauce for pasta, particularly with linguine or fettuccine. It can also be used as a topping for bruschetta, a spread for sandwiches, or a dipping sauce for bread. The sauce can be stored in the refrigerator for several days or frozen for later use. Basil walnut pesto is a versatile and flavorful sauce that is easy to make at home and a favorite in Italian cuisine.