Harvest Moon: Friends of Mineral Town Easter Egg - Carter's Secret Mushroom Plantation

There is a place where you can get truffles for free behind the church, through the locked door on the right. All you got to do to access it is to be friends with Carter, give him mushrooms once a day for a season or so. During fall, go to the church, if you are good enough friends, carter wont be there and then you would go to the door and find its unlocked, after a short scene, you can pick Truffles and Mushrooms anytime you like! Truffles are worth a lot, take advantage of this plantation