Carrot-Rice Soup Recipe from USA

Ingredients

• 1 lb (454 g) carrots , peeled and chopped
• 1 medium onion , chopped
• 1 tbsp margarine
• 4 cups chicken broth , divided
• 0.25 tsp dried tarragon leaves
• 0.25 tsp ground white pepper
• 2.25 cups cooked rice
• 0.25 cup light sour cream
• Chopped parsley or mint for garnish