Pesto, Pestos, Salsa, Ragu, AIOLI, Roux, and TABASCO are all sauces that are based on the herb basil. Pesto is a sauce made from basil, garlic, olive oil, pine nuts, and Parmesan cheese. Pestos is a variation of pesto that includes other ingredients such as sun-dried tomatoes, artichokes, and olives. Salsa is a spicy tomato-based sauce that often includes basil. Ragu is an Italian meat-based sauce that sometimes includes basil. AIOLI is a garlic-based sauce that can include basil. Roux is a French sauce made from butter and flour that can be used to thicken sauces and soups. TABASCO is a hot pepper sauce that sometimes includes basil.