Corn flakes are a popular breakfast cereal manufactured by twin-screw extruder through the treatment of flakes of grain, served with milk and marshmallows, were a very popular food among the families. The history of corn flakes goes back to the late 19th century, when a group of Seventh-day Adventists began to develop new food to meet the standards of their strict vegan diet. Members of the group experimented with a number of different grains, including wheat, oats, rice, barley, and corn.