A breakfast cereal that was created by Clayton Rindlisbacher for the Kellogg company, and later marketed by Kellogg's in 1927 and released to the public in 1928. Rice Krispies are made of crisped rice (rice and sugar paste that is formed into rice shapes or "berries", cooked, dried and toasted), and expand forming very thin and hollowed out walls that are crunchy and crispy. When the cereal is subjected to a change in heat, the walls tend to collapse, creating the famous "Snap, crackle and pop" sounds.