This is the page about Kelp Ketchup. If you were looking for the article about ketchup itself, then see Ketchup.
This is the page about Kelp Ketchup. If you were looking for the article about ketchup packets sold by the Krusty Krab, then see Krusty Ketchup.
Kelp Ketchup is a brand of ketchup used by the Krusty Krab. It only appears in the episode "Cave Dwelling Sponge."
It is ketchup that comes in a dark red bottle with the name written in pale pink letters within a light blue square that has a dark blue border. It likely contains kelp, hence the name.
Role in episode
Spongy Spongy stabs a bottle of Kelp Ketchup with a spatula attached to a pole and gets it on his face as if he is making his mark.