A delicious sauce from the Liguria region of Italy, Walnut cream is also known as "tuccu de nuxe", or white pesto. Nutty and flavorful, this creamy walnut pesto sauce combines meaty walnuts, cashews and pine nuts with smooth olive oil and the perfect seasoning of salt, making it the perfect companion for hearty ravioli and gnocchi. Mix the walnut white pesto with a bit of cream for a sumptuous sauce.