Genetically modified yeast?
Erica Etelson

Also, the isolated soy protein is most likely GMO, and the potato starch potentially so. I might try it once out of curiosity, but would pass as well until the ingredients were truly clean. Health ramifications aside, GMOs are a nightmare for the environment. I eat red meat maybe once a month at most, and I would just as soon satisfy my (albeit “rare”) craving with a grass-fed steak or burger.