Metabolic engineering of yeast for the production of psilocybin (sciencedirect.com)

Article title: Metabolic engineering of Saccharomyces cerevisiae for the de novo production of psilocybin and related tryptamine derivatives

I think this has been posted before but I cannot find the link. FWIW you can make opioids (or opiates?) with yeast, too! Yeasts are interesting.