Romesco is a traditional Spanish sauce originating from the region of Catalonia. It is typically made from a blend of roasted red peppers, tomatoes, garlic, almonds, and olive oil, often seasoned with vinegar and spices. This sauce is known for its rich, nutty flavor and vibrant color, making it a popular accompaniment for seafood, grilled meats, and vegetables. The sauce can vary in ingredients and preparation methods, with some recipes including bread for added thickness. Romesco is often served as a dip or a dressing, showcasing the Mediterranean culinary tradition of combining fresh, local ingredients to create bold flavors.