Cushion Cake

The Cushion Cake is a treasure in. It is actually a with a sugar-like powder on it.

Collecting the treasure
The Cushion Cake is on top of a cylindrical pillar in the northwestern room of sublevel 1 of the Frozen Inferno. It is guarded by two Pyroclasmic Slooches, which should be defeated before attempting to collect it. To collect this treasure, you must first knock it down with a rush from Oatchi, then throw 7 Pikmin at it.