Cauliflower Soup

INGREDIENTS

• Warm rolls or crusty bread, for serving
• 1 carrot, finely diced
• 2 cups whole milk
• Ground black pepper
• 1/2 onion, finely diced
• 1 cauliflower head, cored and roughly chopped
• 8 cups low-sodium chicken broth or stock
• 2 tablespoons finely minced fresh parsley
• 1 heaping cup sour cream, at room temperature
• 1 cup half-and-half
• 1 stick butter
• 6 tablespoons all-purpose flour
• 1 celery stalk, finely diced
• 1 to 2 teaspoons salt (or to taste)