Corn flakes, or cornflakes, are a breakfast cereal made by toasting flakes of corn (maize). The cereal was created by John Harvey Kellogg in 1894 as a food that he thought would be healthy for the patients of the Battle Creek Sanitarium in Michigan where he was superintendent. The breakfast cereal proved popular among the patients and the Kellogg Company (Kellogg's) was set up by Dr. John's brother, Will Kellogg, to produce corn flakes for the wider public. A patent for the process was granted in 1896.
With corn flakes becoming popular in the wider community, a previous patient at the sanitarium, C. W. Post, started to make rival products. Kellogg continued to experiment and various ingredients were added and different grains were used. In 1928, he started to manufacture Rice Krispies, another successful breakfast cereal.
There are many generic brands of corn flakes produced by various manufacturers. As well as being used as a breakfast cereal, the crushed flakes can be a substitute for bread crumbs in recipes and can be incorporated into many cooked dishes.