It's basically the crumbled sausage and its rendered fat in the pan, and you add a roux of flour, milk, salt and pepper. Mmmmmm! One of the kids in the video observed that it didn't taste that great by itself, but on the biscuit it tasted great. Most people are put off by the look of it; I was well grown before even trying it. Now I love it. But I do not like Cracker Barrel's version.
Biscuits and gravy topped with scrambled eggs and generous Louisiana Hot Sauce. The best!