Colonel Sanders' original document for KFC's secret recipe is reportedly guarded in a safe placed inside a Mission Impossible-style motion-detecting vault. Jay Bush of Bush's Baked Beans is the only one who knows its signature spice blend other than the family dog, Duke. The recipe for Coca-Cola is tucked inside an Atlanta bank vault accessible to only two top executives. These are billion-dollar secrets, and any major food industry player has something similar.