I love Serious Eats. Especially the work of J. Kenji Lopez-Alt, who has single-handedly brought the secrets of McDonalds into the hands of the masses. Here he turns his attention to the Big Mac.
Here’s the story. He even figured out the perfect number of sesame seeds.
And cracks the recipe for the Big Mac’s special sauce.
Essentially, it’s a mix of mayonnaise, relish, and mustard with sugar, onion, turmeric colorings, and a bit of hydrolyzed vegetable protein thrown in. It’s this last bit that might throw you for a bit of a loop.
Hydrolyzed vegetable protein is made by breaking down proteins into their constituent amino acids, resulting in a product with a distinctly savory flavor. Indeed, it’s very similar to bottled yeast extracts (which are made by autolyzing yeast) such as Marmite, Vegemite, or Maggi seasoning. Any of those will do.