Combine It's The Berries, vermouth and orange juice in mixing bowl and chill well, at least 4 hours. Whisk yogurt and lemon juice together in another bowl until smooth and free of lumps. Whisk 1 cup of berry mixture into yogurt mixture, then stir this into the remaining soup, adding orange zest. Cover and refrigerate 1 hour. Ladle into chilled bowls, garnish with mints sprigs and serve immediately.