Which nuts are used to make pesto sauce?

While pine nuts are the traditional choice, other nuts can be used as substitutes, including:

* Walnuts: These add a richer, earthier flavor.

* Cashews: Cashews provide a creamy texture and milder flavor.

* Almonds: Almonds lend a slightly sweet and nutty flavor.

* Pistachios: Pistachios offer a bright, green color and a slightly sweet flavor.

The choice of nut ultimately comes down to personal preference and what flavors you're looking for.