Grandma Worm's Gourmet Feed is a pet food that only appears in the episode "Gary's New Toy." It is a pet food for worms.
Grandma Worm's Gourmet Feed comes in large, dark-yellow bags with a picture of an old elderly female worm on it. The feed itself is yellow in color, just like the bag it comes in.
Role in episode
The feed is shown at the Pet Store when Patrick takes "free samples" from them. He punches a hole in the bag and starts to eat the food inside, thanking the mascot for its deliciousness and saying that he might get some for his worms someday. After SpongeBob and Gary leave, Patrick comes back and punches another hole in a different bag and eats from it again.