Rough chop the vegetables and place them into a high-speed blender. Pulse the blender and use the stirring wand to push all the ingredients down into the blade. Puree the soup completely. Add the white wine vinegar and lemon juice and season to taste with salt and freshly ground black pepper.
Check the soup's consistency. If you would like the soup a little thinner, add a few ice cubes to the blender and blend again. Otherwise, transfer the soup to a container and refrigerate until you are ready to serve.
Serve with a dollop of yougurt, some lemon zest, chopped chives and a good grinding of freshly ground black pepper on top.