You stated in November´s FYI (â€Just the Facts: Beerâ€) that sake is a type of beer rather than a wine, because rice is a cereal grain. Yet rye and wheat, from which vodka and whiskey are made, are also cereal grains. Is it how the cereal grain is â€worked†that makes the resulting liquid a beer or a spirit?
Scott Jenkins
Victoria, B.C.
As a fermented grain beverage, sake is more like beer than wine, which is typically made from fruit. Whiskey would not be considered a beer because it undergoes the further process of distillation, as Paul Gatza, director of the Institute for Brewing Studies in Boulder, Colorado, points out.
One difference between sake and beer, Gatza adds, is that the fermentation of sake involves not only yeast but also a mold known as koji. And sake is not brewed; instead, the rice is steamed. Newly steamed rice is added to a fermenting mixture in stages.
Edited by Bob Sillery
Research by Eric Adams, Greg Mone and Jill C. Shomer
138 years of Popular Science at your fingertips.
Each issue has been completely reimagined for your iPad. See our amazing new vision for magazines that goes far beyond the printed page
Stay up to date on the latest news of the future of science and technology from your iPhone or Android phone with full articles, images and offline viewing
Featuring every article from the magazine and website, plus links from around the Web. Also see our PopSci DIY feed
Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?