> But the FDA reported that "samples of morel mushrooms collected from the restaurant were screened for pesticides, heavy metals, toxins, and pathogens. No sign

> But the FDA reported that "samples of morel mushrooms collected from the restaurant were screened for pesticides, heavy metals, toxins, and pathogens. No significant findings were identified." In addition, the state and local health officials noted that DNA sequencing identified the morels used by the restaurant as Morchella sextelata, a species of true morel. This rules out the possibility that the mushrooms were look-alike morels, called "false morels," which are known to contain a toxin called gyromitrin. So the evidence seems to point to the morels, but we don’t have any idea how they could have caused the effect