Monster Jerky can be given to the Pig King in exchange for a Gold Nugget, unlike raw Monster Meat. It can also be fed to a Caged Bird to produce an Egg. It also will decrease Sanity and Health but to a lesser degree than the other forms of monster meat.
See general meat uses.
Unharvested Monster Jerky will not start to spoil as long it's left on the Drying Rack, making it possible to keep it fresh for an indefinite amount of time.
Reign of Giants Edit
In the Reign of Giants DLC, Monster Jerky will begin to spoil immediately upon creation on a Drying Rack, regardless of whether it is harvested or not.