Ingredients 100% Corn Flour. When corn arrived from the New World, polenta quickly adapted to its inviting color and satisfying flavor, eventually becoming an exclusively corn-based hot cereal. Serve it hot with tomato sauce; let it cool, slice it up and grill the pieces; or fry the cubes as a side dish. Our Instant Polenta is specially prepared to cook in just one minute, making it a quick and scrumptious part of any meal.