The Chocolate Cushion is a treasure in Pikmin 2 that is actually a chocolate glazed doughnut. It is found in the 2nd sublevel of the Submerged Castle. It is the 39th treasure on the List of Pikmin 2 treasures.
Captain Olimar's Journal
"I stumbled across this object in a cave that reeked of a putrid odor. My suit allowed me to breathe freely, but it couldn't filter out the overpowering stench. The worst part is, I smell it all the time now! My sense of taste will never be the same! The ship can't analyze tastes, so I guess I'll have to do my best..."
"A sweet tooth's dream! Is this real? Or am I dreaming? If I had teeth, I'd be nibbling with vigor!"