Ingredients

  • 3 tablespoons unsalted butter
  • 1 medium onion, coarsely chopped
  • 1 1/2 pounds blue potatoes, peeled and quartered
  • 6 cups good chicken or vegetable stock
  • 1 bay leaf
  • 1 cup milk or light cream
  • 1/2 teaspoon ground nutmeg
  • 1/2 teaspoon freshly ground pepper
  • Salt to taste

Method

  • Melt the butter in a 3-quart saucepan over medium heat.
  • Add the onion and saute until translucent, about 8 minutes.
  • Add the potatoes, stock and bay leaf and heat to boiling over medium-high heat.
  • Cover and simmer until the potatoes are tender, about 25 minutes.
  • Remove the bay leaf.
  • In batches, carefully puree the mixture in a blender or food processor.
  • (Do not overblend or potatoes will get gluey.)
  • Place in a clean saucepan and stir in the milk or cream.
  • Season with nutmeg, pepper and salt.