Rolled oats
Overview
 
Rolled oats are traditionally oat groats
Groats
Groats are the hulled grains of various cereals, such as oats, wheat, barley or buckwheat . Groats are whole grains that include the cereal germ and fiber-rich bran portion of the grain as well as the endosperm...

 that have been rolled into flat flakes under heavy rollers and then steamed and lightly toasted. The oat
Oat
The common oat is a species of cereal grain grown for its seed, which is known by the same name . While oats are suitable for human consumption as oatmeal and rolled oats, one of the most common uses is as livestock feed...

, like the other cereal
Cereal
Cereals are grasses cultivated for the edible components of their grain , composed of the endosperm, germ, and bran...

s, has a hard, inedible outer husk
Husk
Husk in botany is the outer shell or coating of a seed. It often refers to the leafy outer covering of an ear of maize as it grows on the plant. Literally, a husk or hull includes the protective outer covering of a seed, fruit or vegetable...

 that must be removed before the grain can be eaten. After the outer husk (or chaff
Chaff
Chaff is the dry, scaly protective casings of the seeds of cereal grain, or similar fine, dry, scaly plant material such as scaly parts of flowers, or finely chopped straw...

) has been removed from the still bran-covered
Bran
Bran is the hard outer layer of grain and consists of combined aleurone and pericarp. Along with germ, it is an integral part of whole grains, and is often produced as a by-product of milling in the production of refined grains. When bran is removed from grains, the grains lose a portion of their...

 oat grains, the remainder is called oat groats
Groats
Groats are the hulled grains of various cereals, such as oats, wheat, barley or buckwheat . Groats are whole grains that include the cereal germ and fiber-rich bran portion of the grain as well as the endosperm...

. Oat groats are a whole grain
Whole grain
Whole grains are cereal grains that contain cereal germ, endosperm, and bran, in contrast to refined grains, which retain only the endosperm. Whole grains can generally be sprouted while refined grains generally will not sprout. Whole-meal products are made by grinding whole grains in order to make...

 that can be used as a breakfast cereal
Breakfast cereal
A breakfast cereal is a food made from processed grains that is often, but not always, eaten with the first meal of the day. It is often eaten cold, usually mixed with milk , water, or yogurt, and sometimes fruit but sometimes eaten dry. Some cereals, such as oatmeal, may be served hot as porridge...

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