This is a great food for Wigfrid players, since it restores a large amount of Sanity, and Wigfrid cannot eat Cooked Green Caps.
If the player has developed a Leafy Meat farm through the use of Meat Bulb (Lureplant) on a boat and has access to Bee farms, the player can consistently restore their sanity easily.
The player can use Mushroom Planters to farm Green Caps, which when eaten raw will drop the players sanity by 50 points at once. Combined with the 50 sanity gain from eating Jelly Salad, this allows the player to quickly manipulate their sanity at will.