California Waldorf Salad - California Raisins

Ingredients

• 1 Cup mayonnaise
• 1 / 4 Cup sour cream
• 1 Teaspoon lemon juice
• 2 Teaspoons granulated sugar
• 1 / 4 Cup chopped Italian parsley
• 1 Tablespoon chopped basil
• 1 Teaspoon chopped dill
• 4 large ribs celery
• 1 large Granny Smith apple
• 1 Cup toasted walnuts
• 1 Cup California raisins
• Kosher or sea salt and freshly ground pepper
• 4 large radicchio or butter lettuce leaves