Considered to be a traditional Catalan type of food sauce, which originated in the Catalonia region of Spain. Typically used as an ingredient to enhance the flavor of various foods, Romesco sauce is often served over grilled foods such as fish, poultry, meats, and vegetables. It may also be used as a flavoring for stews and pasta dishes, as well as a spread for breads with meats and cheese. Considered by some to be a garlic sauce, Romesco is most often made with tomatoes, garlic, olive oil, blanched almonds, hazelnuts, vinegar, herbs, red chile peppers, and salt.