Ingredients

  • 2 pounds potatoes new red
  • 1 cup sour cream
  • 1/4 cup balsamic vinegar
  • 1 tablespoon olive oil
  • 2 teaspoons salt
  • 2 teaspoons black pepper freshly ground
  • 1 x black pepper freshly ground
  • 1 cup scallions, spring or green onions sliced
  • 1/2 cup celery coarsly chopped
  • 1 cup radishes sliced

Method

  • Cook potatoes in a large pot of boiling salted water over medium heat just until tender, 15 to 20 minutes.
  • Meanwhile, make balsamic dressing: Whisk sour cream, balsamic vinegar, olive oil, salt and pepper in a large bowl until blended.
  • Stir in all but 2 tablespoons sliced scallions.
  • Drain potatoes well in a colander.
  • Transfer to bowl, add dressing and gently toss to coat.
  • Let potatoes cool to room temperature.
  • Add celery and radishes to potatoes in bowl and toss gently to combine.
  • Line serving bowl with romaine leaves and spoon potato salad onto lettuce.
  • Sprinkle salad with reserved scallions.