We have a Cracker Barrel about 5 miles from here and we haven't eaten at one since we went south on vacation about 10 years ago. I am getting hungry thinking about biscuits (and I am on a diet so I will have to wait until summer).
Saw mill gravy is a white gravy -- made from sausage drippings. I love it. I drench the biscuits and slather it over everything else on my plate!
I gained 12 pounds the first couple of months I was here from eating at the Cracker Barrel and making their gravy at home. I have since taken off the weight.
You're in Indiana aren't you? I'm glad to see the migration northward of good southern food. You will never be disappointed by a cracker barrel. They have the best quality control of any chain in the country.
Rather than trying to explain the food, whcih I can't do, the link to their website follows: http://www.crackerbarrel.com/
If you try it, let me know how you liked it.