Sugar is basically ubiquitous and it looks like it could be used to make morphine, which is a refined form of heroin. Recent research shows that a genetically modified strain of yeast, when exposed to sugar, could be used to ferment the opioid. Yes, essentially, you could homebrew your own scag. I know what you're thinking: "This sounds like madness." But there's some proof behind it. Researchers from the University of California Berkeley and Concordia University in Canada presented an almost complete means to turn glucose to morphine, while scientists from the University of Calgary supplied the missing piece that completes the process. The idea wasn't to flood the streets with home-made heroin. No, the plan is much more noble than that: to produce "cheaper, less addictive, safer and more-effective" painkillers, according to Nature.