Many episodes of the television show Spongebob Squarepants feature Krabby Patties, which seem to have great appeal with the various sea creatures on the show. In the show there is frequently a line out of the door for the Krusty Krab where the burgers are sold. Plankton is willing to go to the extreme to steal the formula believing that it would provide some instant success to his restaurant the Chum Bucket.
The secret formula/recipe for the burger seems very guarded. Many episodes detail the ridiculous measures taken to attempt to steal the formula as well as the methods of protection taken to keep the formula secret. Additionally, the "Training Video" episode leads up to the reveal of the formula but purposely cuts short just as the recipe is to be revealed.
Within the universe of the show, what exactly is in a Krabby Patty?