Gazpacho is a cold soup that is prepared with tomatoes, peppers, cucumbers, garlic and olive oil. It is then mixed and served cold. Cold soup is soup that has been chilled or iced before serving. Cold soups are usually served as an appetizer. They can be eaten as a first course before the main course but can also be served next to the main course. Gazpacho is more of an appetizer than a main dish because it is not filling enough to be a meal on its own.