Fully cooked. No preservatives. American Culinary ChefsBest: 2008 ChefsBest Best Taste Award. Vacuum sealed for freshness. Try all varieties of Tyson Refrigerated Heat 'N Eat Entrees. They are made with high quality Tyson chicken, beef or pork that is perfectly seasoned and slow cooked. No preservatives are needed because this product is completely vacuum sealed for freshness. The ChefsBest Award for Best Taste is awarded to the brand rated highest overall among leading brands by independent professional chefs. US inspected and passed by Department of Agriculture.