Gazpacho soup has a long history as Andalusia's most widely known dish, although there are several theories as to its exact origin. Many believe that it arrived in Andalusia in the southern region of Spain by way of Rome. The Roman legions carried bread, garlic, olive oil, vinegar and salt, the main ingredients of gazpacho soup recipes, along the roads of the Empire, mixing the ingredients to taste as they went. Others believe it came from an Arabic soup of water, garlic, olive oil and bread, and was brought to Spain by the Moors.

The soup is prepared in a mortar and pestle, blender or food processor, and is processed to a consistency ranging anywhere from chunky to smooth as liquid. Gazpacho is served cold and uncooked, and was a popular way for Spanish farmers in the field to restore nutrients and quench their thirst. Because it was fed to the working class, gazpacho was referred to as a poor man's food.

There are three basic types of gazpacho soup: red, white and green. Red is considered the original form, although the tomatoes that create the brilliant color were not an original item. Instead, they were introduced to the dish when Christopher Columbus brought them to Spain from the Andes. Other ingredients can include cucumbers, bell peppers or salt cod. It is often served or garnished with sliced hard-boiled eggs, ham strips, chopped almonds or orange slices. Spices like cumin and crushed mint can add extra taste.

White gazpacho mixes peeled almonds and pine seeds with the basic ingredients and extra water to create a smooth consistency. There is a pungent garlic flavor that can be countered by adding sweet fruits like melon, grapes or apples. White gazpacho makes a wonderfully cool and succulent summer meal.

Green vegetables and herbs lend their color to green gazpacho. Lettuce, endive, green pepper and avocado are commonly found in this soup, as are mint, parsley, basil and coriander. Green gazpacho can be topped with croutons, sliced cucumbers or chopped mint for an appealing finishing touch.

Since gazpacho is made of fresh vegetables, there are many health benefits to be gained from eating the soup. The vitamins, minerals and nutrients found in the vegetables help the body remain healthy and fight many diseases. The antioxidants present in a cool bowl of gazpacho soup will help protect the body from disorders like heart disease and cancer. With such healing properties and its light, refreshing taste, it is no wonder gazpacho soup has maintained its popularity for centuries.