Corn, a True Early American Food. Originating from ancient Mesoamerican civilizations, maize is derived from gigantic domesticated grass. It is the only grain commonly eaten in its natural form. This staple food is hearty and flavorful, and makes a delicious puffed cereal. 100% whole grain yellow corn cereal, 15 grams of whole grains per serving, low fat & cholesterol free, no added salt or sugar & no artificial preservatives, colors or flavors.