Pasta sauce is a popular condiment used to enhance the flavor of pasta dishes. Two of the most popular types of pasta sauce are marinara and pesto. Marinara is a tomato-based sauce that usually contains garlic, onions, herbs, and spices. Pesto is an uncooked sauce made from basil, garlic, pine nuts, Parmesan cheese, and olive oil. Both sauces are delicious and can be used to create a variety of flavorful pasta dishes.