When Kernels planted in cultivated ground, it will grow into a 2 block tall corn stalk yielding 0 to 3 Corn Kernels and 1 Corn when harvested.
Corn is a moderately good food item; however, it only heals one and a half hunger points. It is much more efficient to cook them into Cob O'Corn. Roasting the Corn in an oven yields a Cob O'Corn, which when eaten restores 2 and a half points of hunger. It's a vegetarian replacement yielding the same healing power as bread with a bit less hassle. It can easily be farmed in bulk for a ready food supply. Its seeds can also be cooked into Popcorn.