"Sweet corn (Zea mays convar. saccharata var. rugosa),[1] also called sugar corn and pole corn, is a variety of corn grown for human consumption with a high sugar content. Sweet corn is the result of a naturally occurring recessive mutation in the genes which control conversion of sugar to starch inside the endosperm of the corn kernel. Sweet corn is picked when still in the immature (milk stage) and prepared and eaten as a vegetable, rather than field corn, which is harvested when the kernels are dry and mature (dent stage).[2] Since the process of maturation involves converting sugar to starch, sweet corn stores poorly and must be eaten fresh, canned, or frozen, before the kernels become tough and starchy."- The Wrong Article on Wikipedia