Makes 6 servings

• ½ cup mayonnaise
• 1/3 cup sour cream
• 3 tablespoons bottled white horseradish (not dry)
• 1 tablespoon white wine vinegar
• 1 teaspoon sugar
• ¾ teaspoon salt
• ½ teaspoon black pepper
• 1/3 cup chopped fresh chives
• 3 pounds boiling potatoes (about 2 inches)

Boil potatoes until done, cool them to room temperature and quarter them. Whisk together mayonnaise, sour cream, horseradish, vinegar, sugar, salt and pepper in a large bowl until smooth. Add chives and potatoes and stir to coat.