In a large skillet cook sausage over medium heat until browned and crumbly.
Add 2 Tbsp bacon drippings to skillet and stir until melted. Add flour to skillet and stir until the meat is coated and flour incorporated into all and the mixture becomes fragrant (a little nutty), about 3 minutes.
Gradually add the milk, whisking constantly until the mixture is smooth. Cook for 5 to 7 minutes, whisking constantly until the gravy is thickened, add salt and pepper and adjust the seasonings if necessary. Serve immediately over hot biscuits, toast, grits or mashed potatoes.