When I was young the choice was porridge or corn flakes.
Corn flakes were invented in Battle Creek, Michigan in 1894 by brothers Will and Dr. John Kellogg. They baked some boiled wheat on a baking tin, the doctor was called away on an emergency, and they rolled out the stuff the next day. The result was flakes.
Dr John Kellogg was an Adventist who used this recipe as part of a strict vegetarian regimen for his patients, which also included no alcohol, tobacco or caffeine. The diet he imposed consisted entirely of bland foods. He believed that spicy or sweet foods would increase passions. The foods were therefore experimented in a psychological ward with great success. In contrast, cornflakes would have no aphrodisiac property and lower the sex drive. I doubt the modern adverts mention this fact.
John was interested in the sanatorium, which he owned, while Will who served as the business manager of the sanatorium, decided to try to mass-market the new food. He sweetened up the flakes with malt and bought the commercial rights from his brother.
Will Kellogg started the Battle Creek Toasted Corn Flake Company on this day in 1906.