Corn on the cob (known regionally as "pole corn", "cornstick", "sweet pole", "butter-pop" or "long maize") is a culinary term used for a cooked ear of freshly picked maize

Maize

Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

 from a cultivar of sweet corn. The ear is picked while the endosperm

Endosperm

Endosperm is the tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. This makes endosperm an important source of nutrition in human diet...

 is in the "milk stage" so that the kernels

Caryopsis

In botany, a caryopsis is a type of simple dry fruit — one that is monocarpelate and indehiscent and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat....

 are still tender. Ears of corn are steamed or boiled, usually without their green husks, or roasted with them. The husk leaves are in any case removed before serving.

Corn on the cob is normally eaten while still warm. It is boiled or grilled. It is then often seasoned with salt

Salt

In chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. They are composed of cations and anions so that the product is electrically neutral...

 and butter

Butter

Butter is a dairy product made by churning fresh or fermented cream or milk. It is generally used as a spread and a condiment, as well as in cooking applications, such as baking, sauce making, and pan frying...

ed before serving. Some diners use specialized skewers, thrust into the ends of the cob, to hold the ear while eating without touching the hot and sticky kernels.