Chum on a Stick (better known as Chumsticks) appears in the three episodes Spongicus, Plankton's Regular and The Krabby Kronicle. in Spongicus, it is called Chum on a Stick and is served to Sadie Rechid. In Plankton's Regular, Nat Peterson starts to eat Chumsticks every day, but always has to go to the Bikini Bottom Hospital. In The Krabby Kronicle, it makes a small cameo as Plankton tells Karen that he has a new Chumstick recipe, but later the Chum Bucket gets closed by Health Inspector Yellowtail.
In Spongicus we learn that chumstick is made of Jellyfish squeasings, whale blubber, Sea Horse snout, and anchor rust.