Purple sweets are a stackable food item that are earned from all levels of treasure trails. Purple sweets are the only stackable food item in the game, restoring 1-3 hitpoints and 10% run energy per sweets eaten.
Purple sweets are commonly used by players aiming to get a Fire Cape from defeating TzTok-Jad since one stack is nearly an infinite source of healing.
Since the sweets can stack, they heal the most hitpoints per inventory slot, limited only by the amount the player has and the 2,147,483,647 limit of items you can have. 2,147,483,647 purple sweets means you can heal up to 6,442,450,941 hitpoints. It would also take 4,943,507,355,394 coins until a player can buy the maximum stack of sweets.