Granny's Sausage Gravy

Crumble sausage into hot skillet. Cook until browned. Remove sausage from skillet, let drain on paper plate. Add ½ stick (1/4 cup) butter to hot skillet and melt together with sausage fat. Whisk together 12 oz (1 1/2 cups) canned milk or heavy cream and equal amount water with ¼ cup flour. Add to hot fat in skillet. Add salt and pepper to taste. Bring to a boil, stirring constantly until gravy starts to thicken. Add sausage back into gravy; heat until all is nice and thick. Remove from heat.