Too many people on here talking about FRYING tenderloin. Tenderloin was NEVER meant to be fried! It is made for the grill. You want to grill it however yiou like your steak. For me, that is medium/medium rare.
There are too many other parts of the deer that can be tenderized and fried.
Soak in olive oil, dale's and zesty italian dressing for a few hours to overnight. Cut in 1" thick pieces and wrap in bacon. Grill over low heat until it gets to your desired doneness.....is doneness a word lol?!?!