Man this is a topic that goes way back. I go to my Uncles house every year to see his deer that he always get and man, I see his deer that he hangs in this certain tree, and every year I see the deer looks black inside and all crusted up with weird looking stuff on it and I always asked him, Uncle when are you going to butcher it, he replys "Its not redy yet". I say what are you waiting for, your going to die if you eat this deer, he says "I can tell when itys ready". He says it is tenderizing, I say OK call me when you need a ride too the hospital. Me I let it hang a week.