Lewis and Clark's journals of their journey had a great story on the Mandan people getting all excited when the Missouri River broke ice and they could get the buffalo that had drowned in the river. the meat was green and falling apart. The men, women, and children were shoving great handfuls of it in their mouths with evident relish. Several of their men tried a taste and all became violently ill.
Makes me wonder how much was mindset, cultural bias, or maybe a difference in gut bacteria?