Puffed Rice(muri)

Puffed rice is a type of puffed grain made from rice, commonly used in breakfast cereal or snack foods. It is usually made by heating rice kernels under high pressure in the presence of steam, though the method of manufacture varies widely.
It is a popular street food in India, Bangladesh and Nepal or street snack in Korea.Puffed rice is formed by the reaction of both starch and moisture when heated within the shell of the grain. Unlike corn, rice kernels are naturally lacking in moisture and must first be conditioned with steam. Puffed rice can be created by heating the steam-conditioned kernels either with oil or in an oven. Rice puffed in this way is crisp, and known as "crisped rice". Oven-crisped rice is used to produce the Rice Krispies breakfast cereal as well as the crisped rice used in Lion Bars, Nestlé Crunch, Krackel, and similar chocolate bars.[1] Though not as dramatic a change when compared to popcorn, the process and end result are the same.[1]Another method of puffing rice is "gun puffing", where the grain is conditioned to the correct level of moisture and pressurized to around 200 psi (1,400 kPa). When the pressure is suddenly released, the pressure stored inside the kernel causes it to puff out. This method produces a puffed rice which is spongy in texture.[1]Rice can also be puffed by making a rice dough, and extruding small pellets which are then rapidly heated. The moisture in the dough flash boils and puffs the rice up. A cereal such as Cap'n Crunch is extruded, cooked, cut, pressurized, puffed and dried in a continuous process.[1]The method of modern industrial puffed rice production is attributed to American inventor Alexander P. Anderson, who stumbled across puffing while trying to ascertain the water content of a single granule of starch, introduced the first puffing machine at the World's Fair in Saint Louis, Missouri, in 1904. His eight "guns" that puffed grains for Fair goers were dubbed "The Eighth Wonder of the World" by an advertising billboard poster. Once the puffing principle, technique and technology had been discovered by Anderson, the competition to puff ready-to-eat American breakfast cereal took over the economy of Battle Creek, Michigan, with Kellogg's and Quaker Oats being two memorable and still active names to endure through the early puffing frenzy.