As part of a recent campaign, where they’ve reveal some secrets behind their products, McDonald’s continues to unearth some of their prized industry secrets.

Following the release of a clip that explained why McDonald’s burgers look different in their ads, the company releases a new video featuring McD’s Executive Chef Dan Coudreaut who shows viewers how to make their famous Big Mac and its secret sauce.

We’ll see you later, we’re making some of these at our offices now.