Italian Sauce is a broad term that encompasses many different types of sauces. Pesto is a popular Italian sauce made from basil, garlic, pine nuts, Parmesan cheese, and olive oil. Ragu is a type of Italian sauce made from tomatoes, onions, garlic, herbs, and olive oil. Marinara is another type of Italian sauce made from tomatoes, garlic, oregano, and olive oil. All three of these sauces are staples in Italian cuisine and are used to flavor a variety of dishes.