Ingredients Whisk together stock, cream, flour, soy sauce, 1/2 teaspoon pepper, and 1/2 teaspoon rosemary in a large saucepan over low heat until smooth. Cook, stirring occasionally, until thickened, about 10 minutes. Stir in thawed meatballs, and continue cooking until meatballs are heated through, about 5 more minutes. An instant-read thermometer inserted into the center…