I haven't tried your exact recipe, but it's so similar to the gravy I grew up with and was taught to make that I had to comment. I agree that people over complicate gravy and start to add so many things, but the best gravy is good old fashioned gravy and this hits the mark! The only difference is that my Mammaw always used cream and no sage, but milk and water were used often in a pinch as well and both are equally delicious. Kudos!
This was very tasty even my mil liked it. I did add a little exta sage, about another 1/2 tsp and i used homemade buttermilk buiscuts.