The Krabby Patty secret formula is a mystery, and there are several theories about what it could be. Here are some of the most popular ones:

• Nothing: According to a theory proposed by a Reddit user, the secret formula consists of not a single thing. This is a ruse that Mr. Krabs came up with to stop Plankton from focusing on The Chum Bucket.

• Whale: Another theory proposes that the secret ingredient in Krabby Patties is actually whale. This theory is based on the addictive nature of the Krabby Patty and Mr. Krabs elusiveness when it comes to his key ingredient.

• Plankton: In one episode of SpongeBob, Plankton brings his whole family together in yet another plot to steal the secret formula. He figures that the Krusty Krab can get rid of one of them, but not thousands invading the restaurant all at once. In the end, this plan succeeds, and hes able to read through the list of ingredients. Finding out that hes part of every Krabby Patty scares Plankton and his family off, but it turns out this formula was a fake. This group of thieves broke into the Krusty Krab, but the actual secret formula is tucked away under Mr. Krabs mattress.

Despite these theories, the actual contents of the formula have never been shared on the show, and it remains a mystery.