|Ingredients for gazpacho are simple.|
A common abuse is that bread is omitted. The dish probably originated as a bread soup. According to Wikipedia, it may have come to Spain from the Moors or from Rome, as a soup made of bread and vinegar. Today there are several classic Spanish soups in which bread is a primary ingredient.
Many recipes have Too Many Vegetables. Others actually use commercial tomato juice or add herbs or even Worchester sauce. The result is more a salad than a soup.
I learned to make gazpacho from a Spanish woman and still use a much stained recipe in her hand to make mine. Sara used only a few ingredients to make the soup, then passed little bowls of chopped vegetables (onions, green pepper, cucumbers) and cubes of bread to add as you wished.