Grape Gazpacho

1 1/2 cups small seedless grapes 
1 – 1 1/2 cucumbers, peeled, seeded, if desired and chopped 
1 ½ Granny Smith apples, peeled, cored and cut in small dice
¼ – ½ red onion, chopped
3 tablespoons chopped fresh dill
2 ½- 3 cups skim milk buttermilk
1 ½ cups ice water
1 teaspoon kosher salt
½ teaspoon black pepper
4 radishes, sliced paper thin

Place the grapes, cucumbers, apple and onion in the bowl of a food processor fitted with a steel blade and quickly pulse until chopped well.  Transfer to a mixing or serving bowl and add the dill, buttermilk, water, salt and pepper. Cover and refrigerate until very cold, about 1- 2 hours.  Serve garnished with the radishes. 

Yield: about 8 – 9 cups