Carrot Soup with Anise and Creme Fraiche

Ingredients

• 2 teaspoons anise seeds
• 2 tablespoons unsalted butter
• 1 large yellow onion, chopped
• 2 pounds carrots, peeled and cut into 1-inch pieces
• 6 cups vegetable or chicken stock or water
• Salt and freshly ground black pepper
• 1 cup heavy cream
• 4 tablespoons anise flavored liquor like Sambuca, Ouzo, or Pernod