A condiment is a preparation that is added to food, typically after cooking, to enhance the flavour, to complement the dish or to impart a specific flavor. Such specific flavors generally add sweetness or pungency, or sharp or piquant flavors. Condiments include those added to cooking to impart flavor, such as barbecue sauce and soy sauce, those added before serving such as mayonnaise in a sandwich, and those added tableside to taste, such as ketchup with fast food.