In "Greasy Buffoons," SpongeBob and Mr. Krabs cleaned out the vat of grease in the basement of the Krusty Krab. After cleaning it out, they did not know what to do with the grease. So, they loaded it into a huge truck and dumped all of the grease behind the Chum Bucket. Plankton realizes the mess when taking out the trash the next day. Despite the grease smelling terrible, Plankton thought it tasted quite decent. Plankton starts selling Chum Patties with extra flavor. Mr. Krabs is suspicious about the extra flavor, thinking Plankton stole the Krabby Patty Secret Formula. After proudly saying that he did no such thing, Mr. Krabs realizes his mistake of dumping the grease behind the Chum Bucket, giving Plankton access to attracting customers with the new flavor. What gave it away was Plankton saying that it was possible that he was paid a visit by the "flavor fairy." Mr. Krabs gives Plankton competition by telling SpongeBob to fry two patties for every Krabby Patty they sell (the additional one for the extra flavor from its grease). Plankton and Mr. Krabs declare war when they fight back and forth with new menu items with greasy flavor. After serving WOW! Soup (pure grease on a paper plate) at the Krusty Krab for about a day, Patrick walks in chubbier than usual and covered in grease.
After letting out the words "crunchy... munchy...", Patrick passes out, and SpongeBob calls the Health Inspector, who shuts down the Krusty Krab and the Chum Bucket until they clean up their mess (grease everywhere, even outside of the restaurants). Mr. Krabs supposes that this will be the end of the Krusty Krab, but SpongeBob can't let that be true. He sucks up all of the grease, and makes the Krusty Krab and the Chum Bucket grease-free, therefore ending the grease war.
List of grease products
Deluxe Krabby Patty: A Krabby Patty with extra grease. It is made from two Krabby Patties being grilled (one for the grease and the other for the actual Krabby Patty). As shown by Mr. Krabs, the grease from one patty is slathered onto the other. It is unknown what happens to the patty used for grease.
Chummy Patty: A sandwich consisting of Chum, two pieces of bread, and lots of added grease.
Yummy Bunz: A product consisting of only Krabby Patty buns. These are created when ordinary buns are soaked in grease for an hour (revealed when SpongeBob accidentally drops the buns into the grease).
Ultra Chummy Patty Packed with Quadruple Grilled Goodness: A sandwich sold at the Chum Bucket. Possibly a variant of the Chummy Patty with more added grease.
Crispity Crunchities: A product that consists of burnt grease crumbs. These are shown to be highly addicting and fattening, as they cause Patrick to appear in the Krusty Krab chubbier than usual and craving more.
WOW! Soup: A product consisting of pure grease served on a paper plate. This is the last grease product sold before the Health Inspector shuts down the Krusty Krab and the Chum Bucket.