Youve never tasted a soup quite like this one before This light and refreshing dish has a peppery bite from radishes, hot sauce, and chile powder that is balanced out by creamy avocados, tangy whole buttermilk, and a little honey for sweetness. You can use any variety of radish that you like in this soup, from regular red radishes to bright pink watermelon radishes. Just make sure that the radishes that you use to garnish the soup are cut into small, spoonable pieces. Chilled radish-and-avocado soup is a fantastic way to kick off a spring or summer dinner party. Serve it in small bowls for a sit-down meal, or in shooter glasses or little cups for a passed hors doeuvres. This recipe works well for entertaining because it can be prepared in up to one day in advance. Store the soup, covered, in the refrigerator until you are ready to eat. Then prepare the cubed avocado and sliced radish and scallion garnishes and top the soup just before serving.