I found another Krabby Patty secret formula on the wikipedia:
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Bottom Bun
Patty
Sea Horseradish sauce
Ketchup
Mustard
Mayo
The Secret sauce
Cheese
Pickles
Lettuce
Tomato
Onions
Top Bun
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DIRECTIONS:To make a Krabby Patty, you must first cook the patties at 274 degrees. Secondly, you must flip the patties over for 283 seconds on each side with a good spatula. Finally, the Patty must be placed on a bun which is not pre-sliced with the rest of the ingredients.
The Krabby Patty is prepared with love, which is another secret to its popularity. Use of magic and machines hides the passion and hard work that the Krusty Krab is supportive on.
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This does not however, reveal the ingredients of the patty itself.