Puffed rice and popped rice (or pop rice) are types of puffed grain made from rice commonly eaten in the traditional cuisines of Southeast Asia, East Asia, and South Asia. It has also been produced commercially in the West since 1904 and is popular in breakfast cereals and other snack foods.
Traditional methods to puff or pop rice include frying in oil or salt. Commercial puffed rice is usually made by heating rice kernels under high pressure in the presence of steam, though the method of manufacture varies widely. They are either eaten as loose grains or made into puffed rice cakes.
Commercial popped rice was developed by American inventor Alexander P. Anderson while he was ascertaining the water content of starch granules.
Description
While the terms "puffed rice" and "popped rice" are used interchangeably, they are properly different processes. Puffed rice refers to pre-gelatinized rice grains (either by being parboiled, boiled, or soaked) that are puffed by the rapid expansion of steam upon cooking. Puffed rice retains the shape of the rice grain, but is much larger. Popped rice, on the other hand, refers to rice grains where the hull or the bran is intact. When cooked, the kernel explodes through the hard outer covering due to heating. Popped rice has an irregular shape similar to popcorn. There are various methods, both modern and traditional, for making puffed and popped rice.[1]
Traditional versions by region
East Asia
Puffed rice or other grains are occasionally found as street food in China (called "mixiang" 米香), Taiwan (called "bí-phang" 米芳), Korea (called "ppeong twigi" 뻥튀기), and Japan (called "pon gashi" ポン菓子), where hawkers implement the puffing process using an integrated pushcart/puffer featuring a rotating steel pressure chamber heated over an open flame. The great booming sound produced by the release of pressure serves as advertising.
China
The earliest mention of puffed rice in China is in Zhejiang Province, from a book by Fan Chengda written in the Song dynasty (c. 1100). It was part of the rituals of the Spring Festival and was made in large cooking pots known as fǔ (釜) which was heated with woodfire. Puffed rice, known as bào chǎo mǐ huā lou (爆炒米花), is still a traditional street food in Shanghai where it is made by frying rice in oil and sugar.[2]
Japan
Modern commercial production
Puffed rice cereal
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.[21] Though not as dramatic a change when compared to popcorn, the process and result are the same.[21]
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.
See also
References
- Bienvenido O. Juliano. Rice in human nutrition International Rice Research Institute, FAO, 1993^
- Bào Chǎo Mǐ Huā – Puffed Rice – 爆炒米花 Movable Feasts, retrieved 14 November 2020^
- Okoshi, Osaka's confectionary Kansai Odyssey, 2 May 2018, retrieved 24 May 2021