Evie,
Take the fried chicken "drippings" add flour, salt and pepper and milk to the skillet and stir until smooth, thickened and so delicious I can't believe I am sitting at this computer not making fried chicken, white gravy and mashed potatoes.
La
PS In Woodland, CA at Don's Diner on Wednesdays (what is it with Wednesdays and fried chicken) they prepare a soup called "Cream of Fried Chicken Soup". I suspect it is just chunks of fried chicken and potatoes wallowing around in a healthy bath of white gravy. Yummy delish! Mmmm, yum delish!