It's one thing to be such a burger fanatic that you pay UPS $120 to deliver two In-n-Out Double Double burgers to your house, a house that is located in a state with no In-n-Out Burger units (the chain is concentrated on the West Coast). It's a whole different level of fanaticism to take said burgers that you paid so much to get and then methodically take them apart to see what makes them tick.

The real challenge of the whole process came in teasing out the recipe for the sauce (which In-n-Out insists on calling a “spread“), and here is where obessiveness really pays off as the author actually used a combination of semi-advanced math and deductive reasoning worthy of Sherlock Holmes to arrive at the proper formula.

The glorious result of all that fanaticism in all its messy detail can be seen at… aht.seriouseats.com/archives/2010/07/the-burger-lab-how-to-make-an-in-n-out-double-double-animal-style.html