Pearl Barley Soup with Moscato d'Asti

Ingredients

• 1 tbsp. vegetable oil
• 8 oz. smoked cooked ham, cut into 1/4-inch cubes
• 2 small carrots, finely chopped
• 2 small yellow onions, finely chopped
• 1 medium leek, halved crosswise and thinly sliced
• 1 medium parsnip, finely chopped
• 1⁄2 small celery root, finely chopped
• 1 cup pearl barley
• 4 cups chicken stock
• 2 large russet potatoes, peeled and cut into 1/2-inch cubes
• Kosher salt
• freshly ground black pepper
• 2 tbsp. heavy cream
• Moscato d'Asti, for serving
• Finely chopped chives, to garnish