Join Carla in the Bon Appétit Test Kitchen as she makes pasta with white pesto. This is the direct inverse of the normal basil pesto you know and love. It’s built on a combination of toasted nuts, creamy ricotta, and salty Parmesan, with a little kick coming from raw garlic and fresh oregano. You don’t need a food processor, a mortar and pestle, or a blender—in fact, the entire sauce comes together in the same bowl you can use for serving.