*This article is missing recent additions.
The Black Truffle is a reward item in Farmville. You receive it when a friend finds a Truffle on your farm, or you find a truffle on a friend's farm, and they send one back to you.
You can turn in Truffles for rewards in the Pigpen.
Note that Black Truffles are a good source for getting coins, since you can sell a Strawberry Pig acquired through them for 15.000 coins.
Pigs that can hunt for Black Truffles:
Black Truffles can be traded in for: