Most Trusted Cereal (Adult): Kellogg’s
The first Kellogg’s cereal began with a failed attempt to make granola—W.K. Kellogg accidentally turned wheat berry into flakes. He tried flaking corn next, and in 1906, Kellogg’s Corn Flakes hit the market. Kellogg’s Raisin Bran launched during World War II; it was important for Americans to eat nutrient-packed whole grains during food rationing.