Couscous is one of the staple foods of the Maghrib (western North Africa). Couscous is made from two different sizes of the husked and crushed, but unground, semolina of hard wheat using water to bind them. Semolina is the hard part of the grain of hard wheat (Triticum turgidum var. durum), that resisted the grinding of the relatively primitive medieval millstone. When hard wheat is ground, the endosperm—the floury part of the grain—is cracked into its two parts, the surrounding aleurone with its proteins and mineral salts and the central floury mass, also called the endosperm, which contains the gluten protein that gives hard wheat its unique properties for making couscous and pasta--that is, pasta secca or dried pasta, also called generically macaroni. Couscous is also the name for all of the prepared dishes made from hard wheat or other grains such as barley, millet, sorghum, rice, or maize.
Although the word couscous might derive from the Arabic word kaskasa, "to pound small," it is generally thought to derive from one of the Berber dialects because it does not take the article indicating a foreign language origin. It has also been suggested that the word derives from the Arabic name for the perforated earthenware steamer pot used to steam the couscous, called a kiskis (the French translation couscousière is the word English-speaking writers have adopted), while another theory attributes the word couscous to the onomatopoeic--the sound of the steam rising in thecouscousière, the most unlikely explanation.
