Chilled Avocado-Cucumber Soup

Ingredients

• 1 English cucumber, peeled and diced ( 1/4 cup reserved for garnish)

• 1 avocado, pitted, peeled, and diced ( 1/4 cup reserved for garnish)

• 1/2 teaspoon finely grated lemon zest, plus 1 tablespoon fresh lemon juice

• 1/4 cup coarsely chopped fresh cilantro, plus sprigs for garnish

• 1 scallion, white and pale-green parts only, coarsely chopped (about 2 tablespoons)

• 1 jalapeno, seeded and coarsely chopped

• 1 cup nonfat plain yogurt

• 1 cup cold water

• 1 1/2 teaspoons coarse salt

• 1/4 teaspoon freshly ground pepper