Corn is technically a grain and not a vegetable—the seed of a type of grass, like wheat. It therefore counts toward the recommended three daily servings of whole grains. The corn we eat is “sweet corn” (white, yellow or bi-colored), which has become even sweeter since scientists began breeding varieties with more sugar. Some “super-sweet” corn also stays sweet longer. Baby corn (available canned) is sweet corn that’s been harvested early, and can be eaten cob and all.