For this recipe you will need roasted vegetable broth. I have published one such recipe (recipe#415106). With this broth plus more vegetables that this recipe calls for, you will have a very healthy, very delicious hot weather soup. However you can use regular vegetable broth such as is available in the supermarket if you wish. Gazpachos may be blended smooth as this one is, or chunky with chopped vegetables. You may wish to reserve some of the roasted veggies to add and give texture to the soup. Gazpachos also have a picante taste. You may wish to "doctor" this soup up to meet your expectations. This soup is so tasty because roasting brings out the best in veggies. Enjoy!