Cook Kirby is one of Kirby's copy abilities from his series of games and is his Final Smash in Super Smash Bros. Brawl. Kirby puts on a chef's hat and "rings" a frying pan. Enemies are seemingly sucked into the pot and boiled. After a bit, items come out of the pot and the opponents are thrown upwards.
Accompanying text implies other things may be able to be sucked in as well. At this point, it is still speculation.