Potato Salad with Whipped Cream (Sylvie Charron’s recipe)

Ingredients

• • 2 lbs (1 kg) small red potatoes (baby potatoes)
  • 1 egg yolk
  • 3 tablespoons (45 ml) white vinegar
  • 1 tablespoon (15 ml) butter, melted and cooled
  • 1 tablespoon (15 ml) sugar
  • 1 teaspoon (5 ml) salt
  • 1/2 cup (125 ml) mayonnaise
  • 2 green onions, chopped
  • 4 to 5 stalks celery, thinly sliced
  • 1/4 cup (60 ml) 35% whipping cream
  • Pepper