#3 – Cornflakes
Two brothers, John and Will Kellogg, were working at the Battle Creek Sanitarium in Michigan in 1894. They always wanted to create a new type of food that their patients would enjoy eating, so that they would improve their diets. While they were experimenting with different kinds of food, Will Kellogg accidentally left a boiled pot of corn to harden throughout the night. When they woke up, they saw that crispy thin flakes were the result of this accident, and figured they would serve it to the patients out of curiosity. The patients absolutely loved the cornflakes.