2tablespoons of rendered grease from sausage or 2 tablespoons of butter
2tablespoons all-purpose flour
2cups whole milk
In a large skillet brown sausage over medium heat. Crumble sausage as it browns so you have many small pieces of sausage. When sausage has browned and cooked thoroughly remove sausage from pan. Measure out rendered fat in the pan.
Add butter if necessary so the amount of fat is equal to two tablespoons. For example, if you render only 1 tablespoon from the sausage, add 1 tablespoon of butter. If adding butter allow butter to melt completely. Add 2 tablespoons of all-purpose flour to skillet. Stir flour and fat together, and cook over medium heat for about two minutes. The flour will begin to brown and become fragrant. Add 1/2 cup of milk to the pan, stir until the milk thickens. Add 1/2 cup to milk to the pan, and stir until the second addition thickens. Add remaining milk to pan, allow to thicken and add sausage.
Cook for 1 to 2 minutes, and taste gravy and adjust seasonings with salt and pepper if necessary. Serve gravy over toast or biscuits.