Originally Posted by
Shark
Onions, beef, lettuce, tomato, pickles, cheese, and the "Secret Formula."
If you've ever watched the show, SpongeBob never adds anything extra like a secret formula to the patties, meaning it would be mixed in before he cooks them, coming from the factory, as Spongebob often takes his patties from factory containers.
We can also that Mr. Krabs does not own a factory, as he becomes bankrupt at the closure of the Krusty Krab, and also would be supplying to more than one single Fast Food restaurant with his patties. Using all of this knowledge, we can infer that there is, in fact, no secret formula at all, and the "Secret Formula" is only being passed off as care or love, or more likely, since SpongBob is considered the second-best fry-cook, it is simply his cooking that makes the patties so deliciously desirable.
Conclusion: It tastes just like a good burger.
/thread