What's a Cannibal Sandwich, And Why Is Wisconsin Trying to Cancel Them? Evan Bleier, provided by FacebookTwitterEmail In the ’70s and ’80s, University of Colorado students would gorge themselves on a banquet of raw meat, red onions and jalapeno peppers as part of an annual Packer Day feast that was held in honor of Alfred G. Packer, a convicted cannibal who ate five of his companions after a snowstorm trapped them in the San Juan mountains in the winter of 1873. Though Packer Day has since been deemed to have been in bad taste, there’s another state in the U.S. where eating raw meat remains an annual winter custom — or does it?