Cereal grains supply most of their calories as starch. They are also a significant source of protein, though the amino acid balance is not optimal. Whole grains (see below) are good sources of [dietary fiber]?, [essential fatty acid]?s, and other important nutrient?s.
The cereal crops are (in approximate order of popularity):
In addition, several non-grasses are grown for their seeds. These pseudocereals include (in no particular order):
Rice is eaten as cooked entire grains; oats are rolled or cut into bits (steel-cut oats) and cooked into porridge?. Most other cereals are ground into flour? or meal. If the intended consumers are animals, the meal is mixed into a prepared feed?.
Most grains destined for human consumption are milled: the outer layers of bran and germ are removed (see seed?). This damages the nutritional value but makes the grain more appealing to many palates. Milled grains also keep better because the outer layers of the grains are rich in rancidity-prone fats. The waste from milling is sometimes added to feed?. Overconsumption of milled cereals is sometimes blamed for obesity?. Health?-concious persons often prefer whole grains, which are not milled.
Once (optionally) milled and ground, the flour is made into bread?, pasta, desserts, dumpling?s, and many other products.
Besides cereals, flour is sometimes made from potatoes and chesnut?s.
In American English speech, cold breakfast cereals and porridge are often called simply "cereal".