The Cornish game hen, though it may sound a fancy name, merely refers to young chickens, that are usually fed a significant amount of food and slaughtered when they are about five weeks old. They are not force-fed, as is the case with ducks and geese used to produce foie gras, but are fed quite frequently, and in great volume in order to produce about a two-pound (.91 kg) chicken. They’re most often sold whole and unboned, and make an ideal chicken dinner for one person.