What is the main ingredient in classic pesto sauce?

The main ingredient in classic pesto sauce is basil. This vibrant green herb contributes to the distinctive flavor and aroma that defines the sauce. In traditional recipes, fresh basil is blended with other ingredients, creating a creamy and aromatic paste that is used to enhance various dishes, particularly pasta.

While garlic, pine nuts, and olive oil are also integral components of pesto, they serve to complement the basil rather than overshadow it. Garlic adds a pungent kick, pine nuts provide a rich, buttery texture, and olive oil helps to emulsify the mixture, making it spreadable. However, it is the fresh basil that is the hallmark of classic pesto, establishing its identity and characteristic taste.