Try this Biscuits & Gravy (Fam) recipe, or contribute your own.
Sprinkling all-purpose flour directly onto browned sausage coats the protein and fat particles before the dairy enters the pan. This step creates a roux directly in the skillet without requiring melted butter. Stir the mixture constantly for two minutes over medium heat to eliminate the raw starch flavor. If the flour remains unheated, the finished sauce will taste pasty.
Pouring cold skim milk into a hot pan creates temperature shock that causes lumps. Whisk vigorously during the initial pour to break up thickening starches. Maintain a gentle simmer for five minutes until the liquid coats the back of a spoon. Skim milk contains less fat than whole milk, so the reduction phase is vital for achieving viscosity.
Sausage gravy keeps safely in an airtight container in the refrigerator for up to three days. Reheat leftovers in a saucepan over medium-low heat with a splash of water or milk to restore consistency, as refrigeration causes starches to tighten significantly.