In the past, NASA has also sponsored studies on space beer, and whether or not the popular beverage can be brewed in space. Under current policies, however, alcohol remains forbidden on the International Space Station.
One study, done in conjunction with the University of Colorado, found some puzzling results about how yeast ferments in microgravity environments. The researchers, who announced their findings in 2001, discovered that yeast fermented with greater efficiency in their sample of space beer, making it more alcoholic.
Nice. If you're having attenuation problems, try turning off the gravity!