EastScape Wikibuilt from the game itself
Truffle-scented egg
“Put it in a hatchery on your island with 3 Ordinary pet food: a Truffle Pig in 24 hours. Tradable.”
Hatches
Hatches into 
Truffle Pig in your island's hatchery, in 24 hours. It drops from monsters in The Lantern Mire, The Boneyard.
Sold by
Nestor the Egg Man in The Yard trades it for 150 raw boar + 50 puffball.
The Store: 120,000 tickets.