Do it yourself: Dallas-based food bloggers The Glut Life break 'em down.
Best part? There's at least 1/4 cup of Da Sauce in da batter.
McDonald's is no slouch when it comes to advertising -- a behind-the-scenes look at how the fast-food giant gussies up its food for commercials went viral in June.
Now the company has returned with a second video, in which McDonald's Executive Chef Dan Coudreaut answers a question from Christine H.: "What is in the sauce that is in the Big Mac?"
Turns out, you can pretty much make it at home, from scratch!